From ce19d357bcf876333c0173b23098e7dd66c15e0f Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Thu, 8 Jan 2026 18:33:42 +0100
Subject: [PATCH 01/23] Add an icon library

---
 .gitmodules | 9 ++++++---
 thing-logos | 1 +
 2 files changed, 7 insertions(+), 3 deletions(-)
 create mode 160000 thing-logos

diff --git a/.gitmodules b/.gitmodules
index 0180858..95b403e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
-[submodule "write"]
-	path = write
-	url = https://github.com/rohieb/Write.scad
+[submodule "write"]
+	path = write
+	url = https://github.com/rohieb/Write.scad
+[submodule "thing-logos"]
+	path = thing-logos
+	url = https://github.com/rohieb/thing-logos.git
diff --git a/thing-logos b/thing-logos
new file mode 160000
index 0000000..2ac5bec
--- /dev/null
+++ b/thing-logos
@@ -0,0 +1 @@
+Subproject commit 2ac5bec02e5015918dff95b6c12ba890ef1ea95a
-- 
2.50.1


From b342b09dab8a22ec213deb17bbadb5a7a825d983 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Fri, 9 Jan 2026 20:31:34 +0100
Subject: [PATCH 02/23] Fix indent, some typo, and all of that

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 107 ++++++++++++-----------
 1 file changed, 58 insertions(+), 49 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 19a51e7..960978a 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -33,8 +33,8 @@ $fn = 360;
 NAME = "c3cat";
 LOGO_FILE = ""; // empty string is catear model
 RENDER_COLOR_ONE = true;
-RENDER_COLOR_TWO = true;
-RENDER_COLOR_THREE = true;
+RENDER_COLOR_TEXT = true;
+RENDER_COLOR_LOGO = true;
 USE_TINY_EARS = true;
 
 /**
@@ -48,9 +48,9 @@ USE_TINY_EARS = true;
  * rl: the radius on the lower side of the clip
  * ht: the height of the clip
  * width: the thickness of the wall. Values near 2.5 usually result in a good
- *	clippiness for PLA prints.
+ *  clippiness for PLA prints.
  * name: the name that is printed on your name tag. For the default ru/rt/ht
- *	values, this string should not exceed 18 characters to fit on the name tag.
+ *  values, this string should not exceed 18 characters to fit on the name tag.
  * font: the path to a font for Write.scad.
  */
 
@@ -61,9 +61,18 @@ USE_TINY_EARS = true;
  */
 scale([0.2, 0.2, 0.2]) {
   difference() {
-    scale([5, 5, 5]) rotate(45, [0, 0, 1]) bottle_clip(name=NAME);
-    translate([ 15*5, 0*5, 18*5]) rotate(80, [0, 1, 0]) catear();
-    translate([-15*5, 0*5, 18*5]) rotate(-80, [0, 1, 0]) catear();
+    scale([5, 5, 5])
+      rotate(45, [0, 0, 1])
+        bottle_clip(
+          name=NAME);
+
+    translate([ 15*5, 0*5, 18*5])
+      rotate(-80, [0, 1, 0])
+        catear();
+
+    translate([-15*5, 0*5, 18*5])
+      rotate(-80, [0, 1, 0])
+        catear();
   }
   if (RENDER_COLOR_TWO) {
     color("orange")
@@ -82,7 +91,7 @@ scale([0.2, 0.2, 0.2]) {
 module name(name, font, rl, ht, ru) {
   writecylinder(
     text=name,
-    where=[0,0,0],
+    where=[0, 0, 0],
     radius=rl+0.5,
     height=ht/13*7,
     h=ht/13*4,
@@ -91,22 +100,22 @@ module name(name, font, rl, ht, ru) {
 }
 
 module logo(logo, rl, ht, ru, width) {
-  echo("logo: ", logo);
+  echo(logo=logo);
   if(logo == "") {
     ear_size=ht;
-    echo("ht: ", ht);
-    echo("ru: ", ru);
-    echo("rl: ", rl);
-    echo("width: ", width);
-    translate([0,-max(ru,rl),ht*3/4+.5])
-      rotate([90,0,0])
-        scale([1,1,1])
-          scale([ht/100,ht/100,1])
-            translate([0, -ht/2,0])
+    echo(ht=ht);
+    echo(ru=ru);
+    echo(rl=rl);
+    echo(width=width);
+    translate([0, -max(ru,rl), ht*3/4+.5])
+      rotate([90, 0, 0])
+        scale([1, 1, 1])
+          scale([ht/100, ht/100, 1])
+            translate([0, -ht/2, 0])
               rotate(-90, [0, 0, 1])
                 catear_headband(
                   size=ear_size,
-                  height=max(ru,rl),
+                  height=max(ru, rl),
                   thickness=width,
                   stretch_len=0,
                   tip_len=0,
@@ -114,38 +123,38 @@ module logo(logo, rl, ht, ru, width) {
                   with_rake=false
                 );
   } else {
-        // The logo has been split in 3 parts. // well was... TODO
+    // The logo has been split in 3 parts. // well was... TODO
 /*
-          rotate([0,0,-48]) translate([0,0,ht*3/4-0.1])
-            rotate([90,0,0])
-              scale([0.9,0.9,1])
-                scale([ht/100,ht/100,1])
-                  translate([-25,-29,0.5])
-                    linear_extrude(height=max(ru,rl)*2)
-                      import("logo_1.dxf");
+    rotate([0, 0, -48]) translate([0, 0, ht*3/4-0.1])
+      rotate([90, 0, 0])
+        scale([0.9, 0.9, 1])
+          scale([ht/100, ht/100, 1])
+            translate([-25, -29, 0.5])
+              linear_extrude(height=max(ru,rl)*2)
+                import("logo_1.dxf");
 */
-          translate([0,0,ht*3/4-0.1])
-            rotate([90,0,0])
-              scale([0.8,0.8,1])
-                scale([ht/100,ht/100,1])
-                  translate([-18,-22,0.5])
-                    linear_extrude(height=max(ru,rl)*2)
-                      import(logo);
+    translate([0, 0, ht*3/4-0.1])
+      rotate([90, 0, 0])
+        scale([0.8, 0.8, 1])
+          scale([ht/100, ht/100, 1])
+            translate([-18, -22, 0.5])
+              linear_extrude(height=max(ru, rl)*2)
+                import(logo);
 /*
-          rotate([0,0,44]) translate([0,0,ht*3/4-0.1])
-            rotate([90,0,0])
-              scale([0.7,0.7,1])
-                scale([ht/100,ht/100,1])
-                  translate([-25,-26,0.5])
-                    linear_extrude(height=max(ru,rl)*2)
-                      import("logo_3.dxf");
+    rotate([0, 0, 44]) translate([0, 0, ht*3/4-0.1])
+      rotate([90, 0, 0])
+        scale([0.7, 0.7, 1])
+          scale([ht/100, ht/100, 1])
+            translate([-25, -26, 0.5])
+              linear_extrude(height=max(ru,rl)*2)
+                import("logo_3.dxf");
 */
   }
 }
 
 module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/orbitron.dxf", logo="") {
-	e=100;  // should be big enough, used for the outer boundary of the text/logo
-  rotate([0,0,-45]) {
+  e = 100;  // should be big enough, used for the outer boundary of the text/logo
+  rotate([0, 0, -45]) {
     // main cylinder
     if (RENDER_COLOR_ONE) {
       color("black") difference() {
@@ -157,12 +166,12 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
           }
           cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
         }
-        translate([0,0,-1])
+        translate([0, 0, -1])
           cylinder(r1=rl, r2=ru, h=ht+2);
-        // finally, substract a cube as a gap so we can clip it to the bottle
+        // finally, subtract a cube as a gap so we can clip it to the bottle
         rotate([0, 0, 45])
-          translate([0,0,-1])
-            cube([50,50,50]);
+          translate([0, 0, -1])
+            cube([50, 50, 50]);
       }
     }
     // text
@@ -185,11 +194,11 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
 }
 
 module outer_cutoff(rl, e, ru, ht, width) {
-    // outer cylinder which is substracted, so the text and the logo end
+    // outer cylinder which is subtracted, so the text and the logo end
     // somewhere on the outside ;-)
     difference () {
       cylinder(r1=rl+e, r2=ru+e, h=ht);
-      translate([0,0,-1])
+      translate([0, 0, -1])
         // Note: bottom edges of characters are hard to print when character
         // depth is > 0.7
         cylinder(r1=rl+width+0.7, r2=ru+width+0.7, h=ht+2);
-- 
2.50.1


From aaf497d73688ecd0c3ea13b0d6eab9a369cf379f Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Fri, 9 Jan 2026 20:33:43 +0100
Subject: [PATCH 03/23] Renamed variables for more clarity

RENDER_COLOR_ONE -> RENDER_COLOR_CLIP

RENDER_COLOR_TWO -> RENDER_COLOR_TEXT

RENDER_COLOR_THREE -> RENDER_COLOR_LOGO
---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 12 ++++++------
 generate_bottle_tag.sh                   | 24 ++++++++++++------------
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 960978a..a66d7b5 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -32,7 +32,7 @@ $fn = 360;
 
 NAME = "c3cat";
 LOGO_FILE = ""; // empty string is catear model
-RENDER_COLOR_ONE = true;
+RENDER_COLOR_CLIP = true;
 RENDER_COLOR_TEXT = true;
 RENDER_COLOR_LOGO = true;
 USE_TINY_EARS = true;
@@ -74,13 +74,13 @@ scale([0.2, 0.2, 0.2]) {
       rotate(-80, [0, 1, 0])
         catear();
   }
-  if (RENDER_COLOR_TWO) {
+  if (RENDER_COLOR_TEXT) {
     color("orange")
       translate([ 15*5, 0*5, 18*5])
         rotate(80, [0, 1, 0])
           catear();
   }
-  if (RENDER_COLOR_THREE) {
+  if (RENDER_COLOR_LOGO) {
     color("yellow")
       translate([-15*5, 0*5, 18*5])
         rotate(-80, [0, 1, 0])
@@ -156,7 +156,7 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
   e = 100;  // should be big enough, used for the outer boundary of the text/logo
   rotate([0, 0, -45]) {
     // main cylinder
-    if (RENDER_COLOR_ONE) {
+    if (RENDER_COLOR_CLIP) {
       color("black") difference() {
         cylinder(r1=rl+width, r2=ru+width, h=ht);
         difference() {
@@ -175,7 +175,7 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
       }
     }
     // text
-    if (RENDER_COLOR_TWO) {
+    if (RENDER_COLOR_TEXT) {
       color("orange") difference() {
         name(name=name, font=font, rl=rl, ht=ht, ru=ru);
         cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
@@ -183,7 +183,7 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
       }
     }
     // logo
-    if (RENDER_COLOR_THREE) {
+    if (RENDER_COLOR_LOGO) {
       color("yellow") difference() {
         logo(logo=logo, rl=rl, ht=ht, ru=ru, width=2*width);
         cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
diff --git a/generate_bottle_tag.sh b/generate_bottle_tag.sh
index 8ea378d..42e553e 100755
--- a/generate_bottle_tag.sh
+++ b/generate_bottle_tag.sh
@@ -15,19 +15,19 @@ NAME="\"$1\""
 render() {
 	case "$2" in
 		body)
-			ONE=true
-			TWO=false
-			THREE=false
+			CLIP=true
+			TEXT=false
+			LOGO=false
 			;;
 		name)
-			ONE=false
-			TWO=true
-			THREE=false
+			CLIP=false
+			TEXT=true
+			LOGO=false
 			;;
 		logo)
-			ONE=false
-			TWO=false
-			THREE=true
+			CLIP=false
+			TEXT=false
+			LOGO=true
 			;;
 		*)
 			echo 'fatal: invalid part' >&2
@@ -41,9 +41,9 @@ render() {
 		-D "USE_TINY_EARS=${TINY_EARS}" \
 		-D "LOGO_FILE=${LOGO_FILE}" \
 		-D "NAME=${NAME}" \
-		-D "RENDER_COLOR_ONE=${ONE}" \
-		-D "RENDER_COLOR_TWO=${TWO}" \
-		-D "RENDER_COLOR_THREE=${THREE}" \
+		-D "RENDER_COLOR_CLIP=${CLIP}" \
+		-D "RENDER_COLOR_TEXT=${TEXT}" \
+		-D "RENDER_COLOR_LOGO=${LOGO}" \
 		-o "stls/c3cat-bottle-clip-v${VERSION}_${NAME}_${PART}.stl" \
 		c3cat-bottle-clip/c3cat-bottle-clip.scad
 }
-- 
2.50.1


From 301c06da5f872895f66b9e19678c5bb88d83d879 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Fri, 9 Jan 2026 22:15:35 +0100
Subject: [PATCH 04/23] Add two variables

Add the FONT variable
Propagate the LOGO_FILE
---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index a66d7b5..631a697 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -32,6 +32,7 @@ $fn = 360;
 
 NAME = "c3cat";
 LOGO_FILE = ""; // empty string is catear model
+FONT = ""; // empty string is for Orbitron font
 RENDER_COLOR_CLIP = true;
 RENDER_COLOR_TEXT = true;
 RENDER_COLOR_LOGO = true;
@@ -64,7 +65,9 @@ scale([0.2, 0.2, 0.2]) {
     scale([5, 5, 5])
       rotate(45, [0, 0, 1])
         bottle_clip(
-          name=NAME);
+          name=NAME,
+          font=FONT,
+          logo=LOGO_FILE);
 
     translate([ 15*5, 0*5, 18*5])
       rotate(-80, [0, 1, 0])
@@ -152,7 +155,9 @@ module logo(logo, rl, ht, ru, width) {
   }
 }
 
-module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/orbitron.dxf", logo="") {
+module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="", font="", logo="") {
+  name = name == "" ? "c3cat" : name ;
+  font = font == "" ? "write/orbitron.dxf" : font ;
   e = 100;  // should be big enough, used for the outer boundary of the text/logo
   rotate([0, 0, -45]) {
     // main cylinder
@@ -219,7 +224,9 @@ module catear() {
  * bottles (like fritz cola, etc.). All parameters are passed to the module
  * bottle_clip(), see there for their documentation.
  */
-module bottle_clip_longneck(name="c3cat", width=2.5, font="write/orbitron.dxf") {
+module bottle_clip_longneck(name="", width=2.5, font="") {
+  name = name == "" ? "c3cat" : name ;
+  font = font == "" ? "write/orbitron.dxf" : font ;
   bottle_clip(name=name, ru=13, rl=15, ht=26, width=width, font=font, logo="");
 }
 
-- 
2.50.1


From 6de29e17521bdfdd90fe1f9258e736e146bdec6a Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Sat, 10 Jan 2026 00:10:07 +0100
Subject: [PATCH 05/23] Add documentation of variables (also available in the
 customizer)

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 26 +++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 631a697..9e6dc35 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -28,15 +28,27 @@
 include <write/Write.scad>
 use <catear_headband.scad>
 
+
+// The name that is printed on your name tag.
+NAME = "c3cat";
+// The logo that is printed on your name tag. Has to be a DXF file. You can use the thing-logo repository for inspiration.
+LOGO_FILE = ""; // empty string is catear model
+// The font to be used for the name tag. See Write.scad for details.
+FONT = ""; // empty string is for Orbitron font
+
+/* [Render] */
+// Whether to render the clip, the body.
+RENDER_COLOR_CLIP = true;
+// Whether to render the text part.
+RENDER_COLOR_TEXT = true;
+// Whether to render the logo part.
+RENDER_COLOR_LOGO = true;
+// Add ears to the clip.
+USE_TINY_EARS = true;
+
+// Set the number of facets for circles.
 $fn = 360;
 
-NAME = "c3cat";
-LOGO_FILE = ""; // empty string is catear model
-FONT = ""; // empty string is for Orbitron font
-RENDER_COLOR_CLIP = true;
-RENDER_COLOR_TEXT = true;
-RENDER_COLOR_LOGO = true;
-USE_TINY_EARS = true;
 
 /**
  * Creates one instance of a bottle clip name tag. The default values are
-- 
2.50.1


From bbb63737ccecc8384475e32ebe5471787ad28da6 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Sat, 10 Jan 2026 11:08:01 +0100
Subject: [PATCH 06/23] Add a "FORMAT" variable to change the format for the
 bottle.

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 67 +++++++++++++++++-------
 generate_bottle_tag.sh                   | 20 +++++--
 2 files changed, 62 insertions(+), 25 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 9e6dc35..f629f0e 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -36,6 +36,10 @@ LOGO_FILE = ""; // empty string is catear model
 // The font to be used for the name tag. See Write.scad for details.
 FONT = ""; // empty string is for Orbitron font
 
+// Format of the bottle clip you want to create.
+FORMAT = 0; // [0=Club Mate 50cL, 1=Long Neck as 25cL Club Mate or Fritz-kola, 2=Euroform 2]
+
+
 /* [Render] */
 // Whether to render the clip, the body.
 RENDER_COLOR_CLIP = true;
@@ -76,10 +80,11 @@ scale([0.2, 0.2, 0.2]) {
   difference() {
     scale([5, 5, 5])
       rotate(45, [0, 0, 1])
-        bottle_clip(
+        bottle_clip_format(
           name=NAME,
           font=FONT,
-          logo=LOGO_FILE);
+          logo=LOGO_FILE,
+          format=FORMAT);
 
     translate([ 15*5, 0*5, 18*5])
       rotate(-80, [0, 1, 0])
@@ -103,6 +108,45 @@ scale([0.2, 0.2, 0.2]) {
   }
 }
 
+module bottle_clip_format(name="", font="", logo="", format=0) {
+  name = name == "" ? "c3cat" : name ;
+  font = font == "" ? "write/orbitron.dxf" : font ;
+
+  if (format == 0) {
+    // Club-Mate 0.5L bottle
+    bottle_clip(
+      name=name,
+      font=font,
+      logo=logo,
+      ru=13,
+      rl=17.5,
+      ht=26,
+      width=2.5);
+  } else if (format == 1) {
+    // 0.25L Long Neck format (like fritz-kola)
+    bottle_clip(
+      name=name,
+      font=font,
+      logo=logo,
+      ru=13,
+      rl=15,
+      ht=26,
+      width=2.5);
+  } else if (format == 2) {
+    // Euroform 2 bottle
+    bottle_clip(
+      name=name,
+      font=font,
+      logo=logo,
+      ru=13,
+      rl=22.5,
+      ht=26,
+      width=2.5);
+  } else {
+    assert(false, str("Unknown format ", format, "."));
+  }
+}
+
 module name(name, font, rl, ht, ru) {
   writecylinder(
     text=name,
@@ -167,9 +211,7 @@ module logo(logo, rl, ht, ru, width) {
   }
 }
 
-module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="", font="", logo="") {
-  name = name == "" ? "c3cat" : name ;
-  font = font == "" ? "write/orbitron.dxf" : font ;
+module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/orbitron.dxf", logo="") {
   e = 100;  // should be big enough, used for the outer boundary of the text/logo
   rotate([0, 0, -45]) {
     // main cylinder
@@ -230,18 +272,3 @@ module catear() {
     }
   }
 }
-
-/**
- * Creates one instance of a bottle clip name tag suitable for 0.33l longneck
- * bottles (like fritz cola, etc.). All parameters are passed to the module
- * bottle_clip(), see there for their documentation.
- */
-module bottle_clip_longneck(name="", width=2.5, font="") {
-  name = name == "" ? "c3cat" : name ;
-  font = font == "" ? "write/orbitron.dxf" : font ;
-  bottle_clip(name=name, ru=13, rl=15, ht=26, width=width, font=font, logo="");
-}
-
-/**
- * The Steinie-Tag has been removed since it does not support logos.
-**/
diff --git a/generate_bottle_tag.sh b/generate_bottle_tag.sh
index 42e553e..6707ea4 100755
--- a/generate_bottle_tag.sh
+++ b/generate_bottle_tag.sh
@@ -11,7 +11,7 @@ FN=90
 
 NAME="\"$1\""
 
-# usage: render NAME PART
+# usage: render NAME PART [BOTTLE_FORMAT]
 render() {
 	case "$2" in
 		body)
@@ -35,6 +35,12 @@ render() {
 			;;
 	esac
 
+	if [ $# -lt 3 ]; then
+		BOTTLE_FORMAT="0"
+	else
+		BOTTLE_FORMAT="$3"
+	fi
+
 	echo rendering "$1" "$2"
 	openscad \
 		-D "\$fn=${FN}" \
@@ -44,14 +50,18 @@ render() {
 		-D "RENDER_COLOR_CLIP=${CLIP}" \
 		-D "RENDER_COLOR_TEXT=${TEXT}" \
 		-D "RENDER_COLOR_LOGO=${LOGO}" \
-		-o "stls/c3cat-bottle-clip-v${VERSION}_${NAME}_${PART}.stl" \
+		-o "stls/c3cat-bottle-clip-v${VERSION}_BOTTLE${BOTTLE_FORMAT}_${NAME}_${PART}.stl" \
 		c3cat-bottle-clip/c3cat-bottle-clip.scad
 }
 
 cd "$(dirname $0)"
 
-for PART in body logo name
+for BOTTLE_FORMAT in 0 1 2
 do
-	render "$NAME" "$PART"
-	sleep 1
+	echo "Generating bottle format ${BOTTLE_FORMAT}"
+	for PART in body logo name
+	do
+		render "$NAME" "$PART" "$BOTTLE_FORMAT"
+		sleep 1
+	done
 done
-- 
2.50.1


From f492bdd2cd7b9121891b5da62c6b9a0ad24ecdc0 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Sat, 10 Jan 2026 11:36:09 +0100
Subject: [PATCH 07/23] Add the Steinie bottles

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index f629f0e..ed49767 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -37,7 +37,7 @@ LOGO_FILE = ""; // empty string is catear model
 FONT = ""; // empty string is for Orbitron font
 
 // Format of the bottle clip you want to create.
-FORMAT = 0; // [0=Club Mate 50cL, 1=Long Neck as 25cL Club Mate or Fritz-kola, 2=Euroform 2]
+FORMAT = 3; // [0=Club Mate 50cL, 1=Long Neck as 25cL Club Mate or Fritz-kola, 2=Euroform 2, 3=Steinie bottles]
 
 
 /* [Render] */
@@ -142,6 +142,16 @@ module bottle_clip_format(name="", font="", logo="", format=0) {
       rl=22.5,
       ht=26,
       width=2.5);
+  } else if (format == 3) {
+    // Steinie bottle
+    bottle_clip(
+      name=name,
+      font=font,
+      logo=logo,
+      ru=13,
+      rl=17.5,
+      ht=13,
+      width=2.5);
   } else {
     assert(false, str("Unknown format ", format, "."));
   }
-- 
2.50.1


From 6364985e5531fc661114f08acc2fb8d3fad0f6a3 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Sun, 11 Jan 2026 10:03:00 +0100
Subject: [PATCH 08/23] Add a function to generate a the bottle clip depending
 on the asked format

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 116 +++++++++--------------
 1 file changed, 44 insertions(+), 72 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index ed49767..c0f1388 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -77,84 +77,55 @@ $fn = 360;
  * using meshlab to run `Filters` -> `Cleaning and Repairing` -> `Remove T-Vertices` by `Edge-Flip` with `Ratio` of `1000000` before importing the stl works but but two errors remain.
  */
 scale([0.2, 0.2, 0.2]) {
-  difference() {
-    scale([5, 5, 5])
-      rotate(45, [0, 0, 1])
-        bottle_clip_format(
-          name=NAME,
-          font=FONT,
-          logo=LOGO_FILE,
-          format=FORMAT);
-
-    translate([ 15*5, 0*5, 18*5])
-      rotate(-80, [0, 1, 0])
-        catear();
-
-    translate([-15*5, 0*5, 18*5])
-      rotate(-80, [0, 1, 0])
-        catear();
-  }
-  if (RENDER_COLOR_TEXT) {
-    color("orange")
-      translate([ 15*5, 0*5, 18*5])
-        rotate(80, [0, 1, 0])
-          catear();
-  }
-  if (RENDER_COLOR_LOGO) {
-    color("yellow")
-      translate([-15*5, 0*5, 18*5])
-        rotate(-80, [0, 1, 0])
-          catear();
-  }
+  render_bottle_clip(
+    name=NAME,
+    font=FONT,
+    logo=LOGO_FILE,
+    format=FORMAT,
+    has_ears=USE_TINY_EARS);
 }
 
-module bottle_clip_format(name="", font="", logo="", format=0) {
+module render_bottle_clip(name="", font="", logo="", format=0, has_ears=true) {
   name = name == "" ? "c3cat" : name ;
   font = font == "" ? "write/orbitron.dxf" : font ;
 
-  if (format == 0) {
-    // Club-Mate 0.5L bottle
-    bottle_clip(
-      name=name,
-      font=font,
-      logo=logo,
-      ru=13,
-      rl=17.5,
-      ht=26,
-      width=2.5);
-  } else if (format == 1) {
-    // 0.25L Long Neck format (like fritz-kola)
-    bottle_clip(
-      name=name,
-      font=font,
-      logo=logo,
-      ru=13,
-      rl=15,
-      ht=26,
-      width=2.5);
-  } else if (format == 2) {
-    // Euroform 2 bottle
-    bottle_clip(
-      name=name,
-      font=font,
-      logo=logo,
-      ru=13,
-      rl=22.5,
-      ht=26,
-      width=2.5);
-  } else if (format == 3) {
-    // Steinie bottle
-    bottle_clip(
-      name=name,
-      font=font,
-      logo=logo,
-      ru=13,
-      rl=17.5,
-      ht=13,
-      width=2.5);
-  } else {
+  if (format < 0 || format > 3) {
     assert(false, str("Unknown format ", format, "."));
   }
+
+  // Format == 0: Club-Mate 0.5L bottle
+  // Format == 1: Long Neck bottle (like fritz-kola) 0.25L
+  // Format == 2: Euroform 2 bottle
+  // Format == 3: Steinie bottle
+  ru = 13;
+  rl = format == 1 ? 15 : format == 2 ? 22.5 : 17.5 ;
+  ht = format == 3 ? 13 : 26 ;
+  width = 2.5;
+
+
+  scale([5, 5, 5])
+    rotate(45, [0, 0, 1]) {
+      difference() {
+        bottle_clip(
+          name=NAME,
+          font=FONT,
+          logo=LOGO_FILE,
+          ru=ru,
+          rl=rl,
+          ht=ht,
+          width=width);
+
+        // Render ears if requested
+        if (has_ears) {
+          ears(ht=ht, ru=ru, rl=rl);
+        }
+      }
+
+      // Render ears if requested
+      if (has_ears) {
+        ears(ht=ht, ru=ru, rl=rl);
+      }
+    }
 }
 
 module name(name, font, rl, ht, ru) {
@@ -171,6 +142,7 @@ module name(name, font, rl, ht, ru) {
 module logo(logo, rl, ht, ru, width) {
   echo(logo=logo);
   if(logo == "") {
+    // No logo file specified? Let's print a catear headband instead!
     ear_size=ht;
     echo(ht=ht);
     echo(ru=ru);
@@ -274,7 +246,7 @@ module outer_cutoff(rl, e, ru, ht, width) {
     }
 }
 
-module catear() {
+module ear() {
   if (USE_TINY_EARS) {
       rotate(-90, [0, 0, 1]) union() {
       scale([1,  1 ,1]) translate([0, -85]) import("catear.stl");
-- 
2.50.1


From e2aa0c2a83fc548e8a38c83f38dea734f2f3a9b1 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Sun, 11 Jan 2026 10:08:56 +0100
Subject: [PATCH 09/23] Add the HAS_EARS var and rename the RENDER_EARS to
 RENDER_COLOR_EARS

Add the HAS_EARS variable to be able to generate bottle clips without ears.
Rename the RENDER_EARS to RENDER_COLOR_EARS
---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 10 ++++++----
 generate_bottle_tag.sh                   | 12 +++++++++++-
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index c0f1388..3d11766 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -39,6 +39,8 @@ FONT = ""; // empty string is for Orbitron font
 // Format of the bottle clip you want to create.
 FORMAT = 3; // [0=Club Mate 50cL, 1=Long Neck as 25cL Club Mate or Fritz-kola, 2=Euroform 2, 3=Steinie bottles]
 
+// Append ears to the bottle clip
+HAS_EARS = true;
 
 /* [Render] */
 // Whether to render the clip, the body.
@@ -47,8 +49,8 @@ RENDER_COLOR_CLIP = true;
 RENDER_COLOR_TEXT = true;
 // Whether to render the logo part.
 RENDER_COLOR_LOGO = true;
-// Add ears to the clip.
-USE_TINY_EARS = true;
+// Whether to render the cat ears part.
+RENDER_COLOR_EARS = true;
 
 // Set the number of facets for circles.
 $fn = 360;
@@ -82,7 +84,7 @@ scale([0.2, 0.2, 0.2]) {
     font=FONT,
     logo=LOGO_FILE,
     format=FORMAT,
-    has_ears=USE_TINY_EARS);
+    has_ears=HAS_EARS);
 }
 
 module render_bottle_clip(name="", font="", logo="", format=0, has_ears=true) {
@@ -122,7 +124,7 @@ module render_bottle_clip(name="", font="", logo="", format=0, has_ears=true) {
       }
 
       // Render ears if requested
-      if (has_ears) {
+      if (has_ears && RENDER_COLOR_EARS) {
         ears(ht=ht, ru=ru, rl=rl);
       }
     }
diff --git a/generate_bottle_tag.sh b/generate_bottle_tag.sh
index 6707ea4..bc90159 100755
--- a/generate_bottle_tag.sh
+++ b/generate_bottle_tag.sh
@@ -18,16 +18,25 @@ render() {
 			CLIP=true
 			TEXT=false
 			LOGO=false
+			EARS=false
 			;;
 		name)
 			CLIP=false
 			TEXT=true
 			LOGO=false
+			EARS=false
 			;;
 		logo)
 			CLIP=false
 			TEXT=false
 			LOGO=true
+			EARS=false
+			;;
+		ears)
+			CLIP=false
+			TEXT=false
+			LOGO=false
+			EARS=true
 			;;
 		*)
 			echo 'fatal: invalid part' >&2
@@ -50,6 +59,7 @@ render() {
 		-D "RENDER_COLOR_CLIP=${CLIP}" \
 		-D "RENDER_COLOR_TEXT=${TEXT}" \
 		-D "RENDER_COLOR_LOGO=${LOGO}" \
+		-D "RENDER_COLOR_EARS=${EARS}" \
 		-o "stls/c3cat-bottle-clip-v${VERSION}_BOTTLE${BOTTLE_FORMAT}_${NAME}_${PART}.stl" \
 		c3cat-bottle-clip/c3cat-bottle-clip.scad
 }
@@ -59,7 +69,7 @@ cd "$(dirname $0)"
 for BOTTLE_FORMAT in 0 1 2
 do
 	echo "Generating bottle format ${BOTTLE_FORMAT}"
-	for PART in body logo name
+	for PART in body logo name ears
 	do
 		render "$NAME" "$PART" "$BOTTLE_FORMAT"
 		sleep 1
-- 
2.50.1


From 2ef1e01eaaacc02b86d3c0b274f66d3894b56375 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Tue, 13 Jan 2026 16:18:01 +0100
Subject: [PATCH 10/23] USE_TINY_EARS -> HAS_EARS

---
 generate_bottle_tag.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/generate_bottle_tag.sh b/generate_bottle_tag.sh
index bc90159..dcde946 100755
--- a/generate_bottle_tag.sh
+++ b/generate_bottle_tag.sh
@@ -6,7 +6,7 @@ set -u
 
 VERSION=2.2
 LOGO_FILE='""'
-TINY_EARS=false
+TINY_EARS=true
 FN=90
 
 NAME="\"$1\""
@@ -53,7 +53,7 @@ render() {
 	echo rendering "$1" "$2"
 	openscad \
 		-D "\$fn=${FN}" \
-		-D "USE_TINY_EARS=${TINY_EARS}" \
+		-D "HAS_EARS=${TINY_EARS}" \
 		-D "LOGO_FILE=${LOGO_FILE}" \
 		-D "NAME=${NAME}" \
 		-D "RENDER_COLOR_CLIP=${CLIP}" \
-- 
2.50.1


From 5172886c422869e48e017e48c760ef4c0cdf4994 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Wed, 14 Jan 2026 17:22:24 +0100
Subject: [PATCH 11/23] typo

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 3d11766..c8dbaf9 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -8,7 +8,7 @@
  *
  * This file was modified again by djerun to use the catars printed
  * by c3cat: https://www.printables.com/model/35076-cat-ears
- *  as the logo and optionally allow use the easrs from
+ *  as the logo and optionally allow use the ears from
  * https://www.thingiverse.com/thing:5029374
  * printed at scale 0.2 as glue-ins for additional ears.
  *
-- 
2.50.1


From f91c00bd74313f7a123919259ea3a7f836f76f0a Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Wed, 14 Jan 2026 17:26:49 +0100
Subject: [PATCH 12/23] Fix anti-aliasing problem in preview

Was solve previously with magic value and was not documented.
---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index c8dbaf9..c33dcdb 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -209,8 +209,10 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
           }
           cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
         }
-        translate([0, 0, -1])
-          cylinder(r1=rl, r2=ru, h=ht+2);
+
+        clear_anti_aliasing = 0.01; // The margin to avoid empty surfaces in the preview.
+        translate([0, 0, -clear_anti_aliasing/2])
+          cylinder(r1=rl, r2=ru, h=ht+clear_anti_aliasing);
         // finally, subtract a cube as a gap so we can clip it to the bottle
         rotate([0, 0, 45])
           translate([0, 0, -1])
-- 
2.50.1


From 2ac86c04a9035ddcff2d1c9d20ed51a7928c84e4 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Wed, 14 Jan 2026 17:29:00 +0100
Subject: [PATCH 13/23] Fix rotation problem

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 102 +++++++++++------------
 1 file changed, 50 insertions(+), 52 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index c33dcdb..807a29b 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -105,29 +105,28 @@ module render_bottle_clip(name="", font="", logo="", format=0, has_ears=true) {
   width = 2.5;
 
 
-  scale([5, 5, 5])
-    rotate(45, [0, 0, 1]) {
-      difference() {
-        bottle_clip(
-          name=NAME,
-          font=FONT,
-          logo=LOGO_FILE,
-          ru=ru,
-          rl=rl,
-          ht=ht,
-          width=width);
-
-        // Render ears if requested
-        if (has_ears) {
-          ears(ht=ht, ru=ru, rl=rl);
-        }
-      }
+  scale([5, 5, 5]) {
+    difference() {
+      bottle_clip(
+        name=NAME,
+        font=FONT,
+        logo=LOGO_FILE,
+        ru=ru,
+        rl=rl,
+        ht=ht,
+        width=width);
 
       // Render ears if requested
-      if (has_ears && RENDER_COLOR_EARS) {
-        ears(ht=ht, ru=ru, rl=rl);
+      if (has_ears) {
+        ears(ht=ht, ru=ru, rl=rl, clip_width=width, ears_style=ears_style);
       }
     }
+
+    // Render ears if requested
+    if (has_ears && RENDER_COLOR_EARS) {
+      ears(ht=ht, ru=ru, rl=rl, clip_width=width, ears_style=ears_style);
+    }
+  }
 }
 
 module name(name, font, rl, ht, ru) {
@@ -197,43 +196,42 @@ module logo(logo, rl, ht, ru, width) {
 
 module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/orbitron.dxf", logo="") {
   e = 100;  // should be big enough, used for the outer boundary of the text/logo
-  rotate([0, 0, -45]) {
-    // main cylinder
-    if (RENDER_COLOR_CLIP) {
-      color("black") difference() {
-        cylinder(r1=rl+width, r2=ru+width, h=ht);
-        difference() {
-          union() {
-            name(name=name, font=font, rl=rl, ht=ht, ru=ru);
-            logo(logo=logo, rl=rl, ht=ht, ru=ru, width=width);
-          }
-          cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
-        }
 
-        clear_anti_aliasing = 0.01; // The margin to avoid empty surfaces in the preview.
-        translate([0, 0, -clear_anti_aliasing/2])
-          cylinder(r1=rl, r2=ru, h=ht+clear_anti_aliasing);
-        // finally, subtract a cube as a gap so we can clip it to the bottle
-        rotate([0, 0, 45])
-          translate([0, 0, -1])
-            cube([50, 50, 50]);
-      }
-    }
-    // text
-    if (RENDER_COLOR_TEXT) {
-      color("orange") difference() {
-        name(name=name, font=font, rl=rl, ht=ht, ru=ru);
+  // main cylinder
+  if (RENDER_COLOR_CLIP) {
+    color("black") difference() {
+      cylinder(r1=rl+width, r2=ru+width, h=ht);
+      difference() {
+        union() {
+          name(name=name, font=font, rl=rl, ht=ht, ru=ru);
+          logo(logo=logo, rl=rl, ht=ht, ru=ru, width=width);
+        }
         cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
-        outer_cutoff(rl, e, ru, ht, width);
       }
+
+      clear_anti_aliasing = 0.01; // The margin to avoid empty surfaces in the preview.
+      translate([0, 0, -clear_anti_aliasing/2])
+        cylinder(r1=rl, r2=ru, h=ht+clear_anti_aliasing);
+      // finally, subtract a cube as a gap so we can clip it to the bottle
+      rotate([0, 0, 45])
+        translate([0, 0, -1])
+          cube([50, 50, 50]);
     }
-    // logo
-    if (RENDER_COLOR_LOGO) {
-      color("yellow") difference() {
-        logo(logo=logo, rl=rl, ht=ht, ru=ru, width=2*width);
-        cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
-        outer_cutoff(rl, e, ru, ht, width);
-      }
+  }
+  // text
+  if (RENDER_COLOR_TEXT) {
+    color("orange") difference() {
+      name(name=name, font=font, rl=rl, ht=ht, ru=ru);
+      cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
+      outer_cutoff(rl, e, ru, ht, width);
+    }
+  }
+  // logo
+  if (RENDER_COLOR_LOGO) {
+    color("yellow") difference() {
+      logo(logo=logo, rl=rl, ht=ht, ru=ru, width=2*width);
+      cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
+      outer_cutoff(rl, e, ru, ht, width);
     }
   }
 }
-- 
2.50.1


From 8d0fae76521ca9088b1bc0ca5782ce9d3ad3908a Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Wed, 14 Jan 2026 17:30:33 +0100
Subject: [PATCH 14/23] Add the ear generation in this file.

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 381 +++++++++++++++++++++--
 1 file changed, 362 insertions(+), 19 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 807a29b..74072f0 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -12,13 +12,6 @@
  * https://www.thingiverse.com/thing:5029374
  * printed at scale 0.2 as glue-ins for additional ears.
  *
- * `Ohren_4.stl` and `catears.stl` need to be placed in `../stls/`
- * for the symlinks to work otherwise `catears.stl` needs to be placed
- * at `./catears.stl` and `Ohren_4.stl` at `./catear.stl`.
- *
- * Version of the modification: 1.0
- *
- * See examples.scad for examples on how to use this module.
  *
  * The contents of this file are licenced under CC-BY-SA 3.0 Unported.
  * See https://creativecommons.org/licenses/by-sa/3.0/deed for the
@@ -73,11 +66,6 @@ $fn = 360;
  * font: the path to a font for Write.scad.
  */
 
-/**
- * currently openscad fails to render the original `Ohren_4.stl` outside of the preview mode
- * according to [the wiki](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/FAQ#Why_is_my_imported_STL_file_appearing_with_F5_but_not_F6?) this is the stls fault
- * using meshlab to run `Filters` -> `Cleaning and Repairing` -> `Remove T-Vertices` by `Edge-Flip` with `Ratio` of `1000000` before importing the stl works but but two errors remain.
- */
 scale([0.2, 0.2, 0.2]) {
   render_bottle_clip(
     name=NAME,
@@ -248,11 +236,366 @@ module outer_cutoff(rl, e, ru, ht, width) {
     }
 }
 
-module ear() {
-  if (USE_TINY_EARS) {
-      rotate(-90, [0, 0, 1]) union() {
-      scale([1,  1 ,1]) translate([0, -85]) import("catear.stl");
-      scale([1, -1, 1]) translate([0, -85]) import("catear.stl");
-    }
-  }
+/**
+ * Will create a pair of ears to the bottle clip. By default, they are cat ears.
+ *
+ * Parameters:
+ *
+ * Positioning:
+ * ht: the height of the bottle clip, used to scale the ears
+ * ru: the radius on the upper side of the clip, used to position the ears
+ * rl: the radius on the lower side of the clip, used to position the ears
+ * clip_width: the thickness of the bottle clip
+ *
+ * Ears:
+ * space_between_ears: Space between both ears.
+ * ear_tilt: The X orientation of the ears, to give a more organic look. Angle in degree
+ *
+ * ear_depth: the depth of the ear
+ * ear_thickness: the thickness of the ear arcs
+ * ear_side_len: the length of one side of the ear base triangle
+ * ear_bend_factor: how much the ear is bent. 1 = half circle, 0.00001 = almost straight
+ * ear_stretch_factor: how much the ear is stretched, useful for fox ears or this kind of shapes
+ *
+ * ear_chamfer: size of the chamfer to apply to the edges
+ * ear_chamfer_shape: The shape of the chamfer: "cone", "curve", "curve-in", "pyramid", maybe some others
+ * ear_details: whether to chamfer also the partial arcs
+ *
+ */
+module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_depth=2, ear_thickness=.6, ear_side_len=6, ear_bend_factor=0.5, ear_stretch_factor=1.2, ear_chamfer=1, ear_chamfer_shape="curve", ear_details=true) {
+
+  // This is the radius on which the ears has to be to be centered on the clip.
+  radius = ru+(clip_width/2);
+
+
+  // Math time!
+
+  // The ears are not that bad without this calculation, but I want to improve the base and the join between ears and the clip.
+  // Actually, by tilting the ear, a side of the end will go deeper withing the clip, but the other side may be separated from the clip.
+  // So we need to translate the ears more deeper within the clip to avoid any separation
+  //
+  // So! Trigonometry!
+  //
+  // Viewed from the right of the ear, an ear is like that:
+  //
+  //   A
+  //   |\
+  //   | \
+  // h |  \ s
+  //   |   \
+  //   +----\ D
+  //  C   l  \
+  //          \
+  //           \
+  //            \
+  //             B
+  //
+  // A is the side of the ear which is going upper
+  // B is the side of the ear which is going deeper
+  // C is the clip level
+  // D is the midpoint between A and B
+  // s is the depth of the ear (from A to B!)
+  // h is the heigh we are searching for. We will lower the ear of this size.
+  // l is the half of length of the fingerprint of the ear in the clip.
+  // ADC is the tilt angle
+  // ACD is a 90 degree angle
+  //
+  // So, to find the h length, we can use s and the angle ADC.
+  //
+  // CAH => We don't have the adjacent length. So, we can't use this formula
+  // SOH => sin(ADC) = h / (s/2)
+  // TOA => We don't have the adjacent length. So, we can't use this formula
+  //
+  // sin(ADC)         = h / (s/2)
+  // sin(ADC) * (s/2) = h
+  //
+  // BUT! Since we will raise the Clip level C to the end of the ear A, the print of the ear within the clip will be shifted of `l`!
+  // So, let's calculate it!
+  //
+  //
+  // CAH => cos(ADC) = l / (s/2)
+  // SOH => Is not targeting what we want.
+  // TOA => The opposed side is less precise than the hypothenus, so, we will not use this formula
+  //
+  // cos(ADC)         = l / (s/2)
+  // cos(ADC) * (s/2) = l
+
+  tilt_compensation = sin(ear_tilt) * (ear_depth/2);
+  tilt_shift = cos(ear_tilt) * (ear_depth/2);
+
+  // Pythagoras!
+  // Viewed from the top, an ear is like that:
+  //
+  //   A   s
+  //   +----- E
+  //   |   /
+  // x |  / r
+  //   | /
+  //   |/
+  //   c
+  //
+  // c is the center of the circle forming the top surface of the clip
+  // E is the perfect position of the ear
+  // r is the radius, calculated previously
+  // s is the half of the space between ears
+  // x is the position of the ears on the Y axis. It's what we want to calculate
+  // A is the projection of the ears on the Y axis
+  // A is a 90 degrees angle
+  //
+  // x**2 + s**2 =       r**2
+  // x**2        =       r**2 - s**2
+  // x           = sqrt( r**2 - s**2 )
+  s = space_between_ears / 2;
+  pos_ears_yaxis = sqrt(pow(radius, 2) - pow(s, 2));
+
+  // Trigonometry!
+  // Now, lets, rotate the ears to be at tangent to the clip
+  //
+  // From the top, an ear is like this:
+  //
+  //    A    s
+  //     +------- E
+  //     |      /
+  //     |     /
+  //   x |    / r
+  //     |   /
+  //     |  /
+  //     | /
+  //     |/
+  //     C
+  //
+  // E is the position of the ears
+  // C is the center of the clip
+  // A is the projection of the ears on the Y axis
+  // r is the radius
+  // s is the half of the space between the ears.
+  // x is the same from the last figure.
+  // A is a 90 degrees angle
+  //
+  // The angle of the ear is the same as the angle ACE.
+  // So, we need to calculate this angle
+  //
+  // Since, we already know every lengths s, r and x, we can choose the formula we want!
+  // IDK which one is faster, but that could be a nice optimization.
+  //
+  // CAH => cos(ACE) = x/r
+  // SOH => sin(ACE) = s/r
+  // TOA => tan(ACE) = x/s
+  //
+  // Let's choose the sine, since it's linked to the our best raw non-rounded values. It will give us values with the best accuracy.
+  ears_angle = asin(s/radius);
+
+  // Like that, it's good enough. And it could be committed like that. Actually, my first model (never published it) was like that.
+  // BUT we can do better and smarter! (and we will probably need to refine it)
+
+  // If we stop our math here, we centered the middle of the ear on the clip. But the end of the ears are NOT centered.
+  //
+  // So, we will use (again) Pythagoras!
+  // We want to position the ear (on its center) to put the end of the ear in the radius.
+  //
+  // Form the top, an ear looks like that:
+  //            e
+  //           /|
+  //          / |
+  //         /  |
+  //      r /   |  h
+  //       /    |
+  //      /     |
+  //     /      |
+  //  C /-------+ E
+  //        p
+  //
+  // C is the center of the clip
+  // e is the end of the ear
+  // E is the middle of the ear.
+  // r is the Radius
+  // h is the half of the width of the ear
+  // E is a 90 degrees angles
+  // p is wanted length to position correctly the center of the ear.
+  //
+  // h**2 + p**2 =      r**2
+  //        p**2 =      r**2 - h**2
+  //        p    = sqrt(r**2 - h**2)
+
+  center_radius = sqrt( pow(radius, 2) - pow((ear_side_len+(tilt_shift))/2, 2) );
+
+  // So, we need to update the projection of the ears on the Y axis, based on center_radius, instead of radius.
+  pos_ears_yaxis_end_ear = sqrt(pow(center_radius, 2) - pow(s, 2));
+
+  translate([0, -pos_ears_yaxis_end_ear, ht-tilt_compensation-(ear_thickness/2)])
+    rotate(90, [0, 0, 1])
+      rotate(90, [0, 1, 0])
+          union() {
+            scale([1,  1 ,1])
+              translate([0, space_between_ears/2, 0])
+                rotate(ears_angle, [1, 0, 0])
+                  rotate(-ear_tilt, [0, 1, 0])
+                    ear(
+                      depth=ear_depth,
+                      thickness=ear_thickness,
+                      side_len=ear_side_len,
+                      bend_factor=ear_bend_factor,
+                      stretch_factor=ear_stretch_factor,
+                      chamfer=ear_chamfer,
+                      chamfer_shape=ear_chamfer_shape,
+                      details=ear_details
+                    );
+            scale([1, -1, 1])
+              translate([0, space_between_ears/2, 0])
+                rotate(ears_angle, [1, 0, 0])
+                  rotate(-ear_tilt, [0, 1, 0])
+                    ear(
+                      depth=ear_depth,
+                      thickness=ear_thickness,
+                      side_len=ear_side_len,
+                      bend_factor=ear_bend_factor,
+                      stretch_factor=ear_stretch_factor,
+                      chamfer=ear_chamfer,
+                      chamfer_shape=ear_chamfer_shape,
+                      details=ear_details
+                    );
+          }
+}
+
+/**
+  * Module that creates an ear shape.
+  *
+  * Parameters:
+  *
+  * depth: the depth of the ear
+  * thickness: the thickness of the ear arcs
+  * side_len: the length of one side of the ear base triangle
+  * bend_factor: how much the ear is bent. 1 = half circle, 0.00001 = almost straight
+  * stretch_factor: how much the ear is stretched, useful for fox ears or this kind of shapes
+  *
+  * chamfer: size of the chamfer to apply to the edges
+  * chamfer_shape: The shape of the chamfer: "cone", "curve", "curve-in", "pyramid", maybe some others
+  * details: whether to chamfer also the partial arcs
+  *
+  * By default, this module creates an ear.
+  *
+  * I don't remember the original author of this module. I refactored it and improved it a bit. Documentation is from me.
+  */
+module ear(depth, thickness, side_len=30, bend_factor=0.5, stretch_factor=1.2, chamfer=1, chamfer_shape="curve", details=true) {
+  depth = depth == undef ? 20 : depth ;
+  thickness = thickness == undef ? 3 : thickness ;
+
+  echo("Generating ONE single ear",
+    depth = depth,
+    thickness = thickness,
+    side_len = side_len,
+    bend_factor = bend_factor,
+    stretch_factor = stretch_factor,
+    chamfer = chamfer,
+    chamfer_shape = chamfer_shape,
+    details = details
+  );
+
+  $A=[0, side_len/2];
+  $B=[0,-side_len/2];
+  $C=[-(side_len/2/sin(120))*1.5*stretch_factor, 0];
+  $c=sqrt(pow($A.x-$B.x, 2)+pow($A.y-$B.y, 2));
+  $b=sqrt(pow($A.x-$C.x, 2)+pow($A.y-$C.y, 2));
+  $a=sqrt(pow($C.x-$B.x, 2)+pow($C.y-$B.y, 2));
+  $hc=-$C.x;
+  $alpha=asin($hc/$b);
+  $beta=$alpha;
+  $gamma=180-$alpha-$beta;
+  $delta=180*bend_factor;
+  $bend_radius=$a/(2*cos(90-$delta/2));
+  $bend_offset=$bend_radius*sin(90-$delta/2);
+
+  translate([0, -$c/2, 0])
+    rotate($beta, [0, 0, 1])
+      translate([0, $a/2, 0])
+        translate([$bend_offset, 0, 0])
+          color("#00ffff")
+            chamfer(size=(details)?chamfer:0, child_h=depth, child_bot=-depth/2, shape=chamfer_shape)
+              partial_ring(
+                part=$delta/360,
+                radius=$bend_radius,
+                thickness=thickness,
+                height=depth
+              );
+  translate([0, $c/2, 0])
+    rotate(-$alpha, [0, 0, 1])
+      translate([0, -$b/2, 0])
+        translate([$bend_offset, 0, 0])
+          color("#ff00ff")
+            chamfer(size=(details)?chamfer:0, child_h=depth, child_bot=-depth/2, shape=chamfer_shape)
+              partial_ring(
+                part=$delta/360,
+                radius=$bend_radius,
+                thickness=thickness,
+                height=depth
+              );
+  translate($A) color("#aaaaaa")
+    chamfer(size=chamfer, child_h=depth, child_bot=-depth/2, shape=chamfer_shape)
+      cylinder(h=depth, d=thickness, center=true);
+  translate($B) color("#bbbbbb")
+    chamfer(size=chamfer, child_h=depth, child_bot=-depth/2, shape=chamfer_shape)
+      cylinder(h=depth, d=thickness, center=true);
+  translate($C) color("#cccccc")
+    chamfer(size=chamfer, child_h=depth, child_bot=-depth/2, shape=chamfer_shape)
+      cylinder(h=depth, d=thickness, center=true);
+}
+
+/**
+ * This module is not mine.
+ */
+module partial_ring(part, radius, thickness, height) {
+  rotate(180-180*part, [0, 0, 1])
+    rotate_extrude(angle=360*part)
+      translate([radius, 0])
+        square([thickness, height], center=true);
+}
+
+/**
+ * This module is not mine.
+ */
+module chamfer(size=2, child_h=5, child_bot=0, shape="curve") {
+    chamfer_size=size;
+
+    module chamfer_shape() {
+        if (shape == "cone") {
+            $fn=16;
+            cylinder(chamfer_size/2,chamfer_size/2,0);
+        } else if (shape == "curve") {
+            $fn=4;
+            for( y = [0:1/$fn:1]) {
+                cylinder(chamfer_size/2*(1-y),chamfer_size/2/cos(180/$fn)*y,0);
+            }
+        } else if (shape == "curve-in") {
+            $fn=16;
+            intersection() {
+                sphere(chamfer_size/2/cos(180/$fn));
+                translate([0,0,chamfer_size/2])
+                    cube(chamfer_size, center=true);
+            }
+        } else if (shape == "pyramid") {
+            $fn=4;
+            cylinder(chamfer_size/2/cos(180/$fn),chamfer_size/2,0);
+        }
+    }
+
+    module lower_chamfer() {
+        minkowski()
+        {
+            linear_extrude(0.0001) difference() {
+                square([1000,1000],center=true);
+                projection()children(0);
+            }
+            chamfer_shape();
+        }
+    }
+
+    module upper_chamfer() {
+        scale([1,1,-1])lower_chamfer()children();
+    }
+
+    render()difference() {
+        children();
+        translate([0,0,child_bot])lower_chamfer()children();
+        translate([0,0,child_bot+child_h])upper_chamfer()children();
+    }
 }
-- 
2.50.1


From 8b7f829cffd9bc183e787a6e70d9fb511ddb6670 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Wed, 14 Jan 2026 21:35:12 +0100
Subject: [PATCH 15/23] typo

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 74072f0..ccc1400 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -315,7 +315,7 @@ module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_
   //
   // CAH => cos(ADC) = l / (s/2)
   // SOH => Is not targeting what we want.
-  // TOA => The opposed side is less precise than the hypothenus, so, we will not use this formula
+  // TOA => The opposed side is less precise than the hypotenuse, so, we will not use this formula
   //
   // cos(ADC)         = l / (s/2)
   // cos(ADC) * (s/2) = l
-- 
2.50.1


From 9bebad59c39e150b836f50cdb26c5623c27812f6 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Wed, 14 Jan 2026 21:45:32 +0100
Subject: [PATCH 16/23] Fixing trigonometry

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 50 ++++++++++++++++++------
 1 file changed, 38 insertions(+), 12 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index ccc1400..a868512 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -480,24 +480,50 @@ module ear(depth, thickness, side_len=30, bend_factor=0.5, stretch_factor=1.2, c
   depth = depth == undef ? 20 : depth ;
   thickness = thickness == undef ? 3 : thickness ;
 
-  echo("Generating ONE single ear",
-    depth = depth,
-    thickness = thickness,
-    side_len = side_len,
-    bend_factor = bend_factor,
-    stretch_factor = stretch_factor,
-    chamfer = chamfer,
-    chamfer_shape = chamfer_shape,
-    details = details
-  );
-
+  // $A and $B are the end of the ear
+  // $C is the higher end point.
   $A=[0, side_len/2];
   $B=[0,-side_len/2];
-  $C=[-(side_len/2/sin(120))*1.5*stretch_factor, 0];
+  // From the front, an ear looks like:
+  //
+  //       $C
+  //      /|\
+  //     / | \
+  //    /  |  \
+  //   /---+---\
+  // $B    c    $A
+  //
+  // c is the origin of the ear.
+  // $Bc$C and $Ac$C are 90deg angles.
+  //
+  // The length [$B $A] is `side_len`
+  // Thus, [$B c] == [c $A] == side_len/2
+  //
+  // Since SOH, sin(angle) = Opposed / Hypotenuse
+  // sin(angle)              = Opposed / Hypotenuse
+  // sin(angle) * Hypotenuse = Opposed
+  //              Hypotenuse = Opposed / sin(angle)
+  //
+  // Thus, the `(side_len/2/sin(120))` implies that "The opposed side of the 120 angle is `(side_len/2)` length" and is the formula to know the size of the hypotenuse.
+  // Moreover, a 120deg angle in a right rectangle does not exists: the sum of all the angles of a triangle needs to be 180deg. I think the author tried, instead, to use the 60 as an angle, since the sinus is the same.
+  //
+  // The correct formula should be `((side_len/2)*tan(60))`: since $C$B$A should a 60deg angle to have an equilateral `$A$B$C` triangle, the product of the tangent ("TOA") of this angle and the adjacent segment [$B c] will give us the size of length of the opposed segment [$C c].
+  //
+  // MOREOVER, the product of the magic number `1.5` with the divisor `sin(120)`... is actually the result of the `tan(60)`!
+  //
+  // The original formula was:
+  // $C=[-(side_len/2/sin(120))*1.5*stretch_factor, 0];
+  $C=[-((side_len/2)*tan(60))*stretch_factor, 0];
+
+  // $a, $b and $c are the distance between the different points of the triangle.
   $c=sqrt(pow($A.x-$B.x, 2)+pow($A.y-$B.y, 2));
   $b=sqrt(pow($A.x-$C.x, 2)+pow($A.y-$C.y, 2));
   $a=sqrt(pow($C.x-$B.x, 2)+pow($C.y-$B.y, 2));
+
+  // $hc is the height of $C.
   $hc=-$C.x;
+
+  // If I correctly understood, $alpha should be the angle of the $B$A$C. This should be 60deg... but is not. idk why.
   $alpha=asin($hc/$b);
   $beta=$alpha;
   $gamma=180-$alpha-$beta;
-- 
2.50.1


From 37c2e71138bef14bff5bf6ce8e9be4db15dd3014 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Thu, 15 Jan 2026 18:24:34 +0100
Subject: [PATCH 17/23] Add 2 styles for ears

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 72 +++++++++++++++++++++---
 generate_bottle_tag.sh                   |  4 +-
 2 files changed, 65 insertions(+), 11 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index a868512..b2f3a7c 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -32,8 +32,8 @@ FONT = ""; // empty string is for Orbitron font
 // Format of the bottle clip you want to create.
 FORMAT = 3; // [0=Club Mate 50cL, 1=Long Neck as 25cL Club Mate or Fritz-kola, 2=Euroform 2, 3=Steinie bottles]
 
-// Append ears to the bottle clip
-HAS_EARS = true;
+// Style of the ears to add... or not add. This parameter can add a LOT of calculation time.
+EARS_STYLE = 0; // [0=No ears, 1=Just arcs, 2=Filled ears with the same thickness, 3=Filled ears with the a thinner thickness inside]
 
 /* [Render] */
 // Whether to render the clip, the body.
@@ -72,10 +72,10 @@ scale([0.2, 0.2, 0.2]) {
     font=FONT,
     logo=LOGO_FILE,
     format=FORMAT,
-    has_ears=HAS_EARS);
+    ears_style=EARS_STYLE);
 }
 
-module render_bottle_clip(name="", font="", logo="", format=0, has_ears=true) {
+module render_bottle_clip(name="", font="", logo="", format=0, ears_style=1) {
   name = name == "" ? "c3cat" : name ;
   font = font == "" ? "write/orbitron.dxf" : font ;
 
@@ -105,13 +105,13 @@ module render_bottle_clip(name="", font="", logo="", format=0, has_ears=true) {
         width=width);
 
       // Render ears if requested
-      if (has_ears) {
+      if (ears_style > 0) {
         ears(ht=ht, ru=ru, rl=rl, clip_width=width, ears_style=ears_style);
       }
     }
 
     // Render ears if requested
-    if (has_ears && RENDER_COLOR_EARS) {
+    if (ears_style > 0 && RENDER_COLOR_EARS) {
       ears(ht=ht, ru=ru, rl=rl, clip_width=width, ears_style=ears_style);
     }
   }
@@ -262,7 +262,7 @@ module outer_cutoff(rl, e, ru, ht, width) {
  * ear_details: whether to chamfer also the partial arcs
  *
  */
-module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_depth=2, ear_thickness=.6, ear_side_len=6, ear_bend_factor=0.5, ear_stretch_factor=1.2, ear_chamfer=1, ear_chamfer_shape="curve", ear_details=true) {
+module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_depth=2, ear_thickness=.6, ear_side_len=6, ear_bend_factor=0.5, ear_stretch_factor=1.2, ear_chamfer=1, ear_chamfer_shape="curve", ear_details=true, ears_style=1) {
 
   // This is the radius on which the ears has to be to be centered on the clip.
   radius = ru+(clip_width/2);
@@ -430,7 +430,8 @@ module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_
               translate([0, space_between_ears/2, 0])
                 rotate(ears_angle, [1, 0, 0])
                   rotate(-ear_tilt, [0, 1, 0])
-                    ear(
+                    ear_with_style(
+                      style=ears_style,
                       depth=ear_depth,
                       thickness=ear_thickness,
                       side_len=ear_side_len,
@@ -444,7 +445,8 @@ module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_
               translate([0, space_between_ears/2, 0])
                 rotate(ears_angle, [1, 0, 0])
                   rotate(-ear_tilt, [0, 1, 0])
-                    ear(
+                    ear_with_style(
+                      style=ears_style,
                       depth=ear_depth,
                       thickness=ear_thickness,
                       side_len=ear_side_len,
@@ -457,6 +459,58 @@ module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_
           }
 }
 
+module ear_with_style(style = 1, depth, thickness, side_len=30, bend_factor=0.5, stretch_factor=1.2, chamfer=1, chamfer_shape="curve", details=true) {
+  if (style == 1 || style == 2 || style == 3) {
+    // Style 1: Just arcs
+    // Style 2: Filled ears with the same thickness
+    // Style 3: Filled ears with the a thinner thickness inside
+
+    ear(
+      depth=depth,
+      thickness=thickness,
+      side_len=side_len,
+      bend_factor=bend_factor,
+      stretch_factor=stretch_factor,
+      chamfer=chamfer,
+      chamfer_shape=chamfer_shape,
+      details=details
+    );
+  }
+
+
+  if (style == 2 || style == 3) {
+    // Style 2: Filled ears with the same thickness
+    // Style 3: Filled ears with the a thinner thickness inside
+
+    thickness_steps = thickness*0.5;
+    depth_steps = (depth-thickness)/((side_len / thickness_steps));
+
+    for (round_side_len = [side_len-thickness_steps:-thickness_steps:0]) {
+      //                         round_side_len =  side_len - (thickness_steps * x)
+      // (thickness_steps * x) + round_side_len =  side_len
+      // (thickness_steps * x)                  =  side_len - round_side_len
+      //                    x                   = (side_len - round_side_len) / thickness_steps
+      x = (side_len - round_side_len) / thickness_steps;
+      round_shift = depth_steps * x;
+      current_depth = depth - (style == 3 ? round_shift : 0);
+      translation = style == 2 ? 0 : round_shift / 2;
+
+      translate([0, 0, translation])
+        color("green")
+          ear(
+            depth=current_depth,
+            thickness=thickness,
+            side_len=round_side_len,
+            bend_factor=bend_factor,
+            stretch_factor=stretch_factor,
+            chamfer=chamfer,
+            chamfer_shape=chamfer_shape,
+            details=true
+          );
+    }
+  }
+}
+
 /**
   * Module that creates an ear shape.
   *
diff --git a/generate_bottle_tag.sh b/generate_bottle_tag.sh
index dcde946..3c726dc 100755
--- a/generate_bottle_tag.sh
+++ b/generate_bottle_tag.sh
@@ -6,8 +6,8 @@ set -u
 
 VERSION=2.2
 LOGO_FILE='""'
-TINY_EARS=true
 FN=90
+EARS_STYLE=1
 
 NAME="\"$1\""
 
@@ -53,7 +53,7 @@ render() {
 	echo rendering "$1" "$2"
 	openscad \
 		-D "\$fn=${FN}" \
-		-D "HAS_EARS=${TINY_EARS}" \
+		-D "EARS_STYLE=${EARS_STYLE}" \
 		-D "LOGO_FILE=${LOGO_FILE}" \
 		-D "NAME=${NAME}" \
 		-D "RENDER_COLOR_CLIP=${CLIP}" \
-- 
2.50.1


From 7c49687f9cbdf258f970400cd6e9998d68cb1dd4 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Thu, 15 Jan 2026 18:26:36 +0100
Subject: [PATCH 18/23] Add a new ear style

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index b2f3a7c..7af3bbc 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -30,10 +30,10 @@ LOGO_FILE = ""; // empty string is catear model
 FONT = ""; // empty string is for Orbitron font
 
 // Format of the bottle clip you want to create.
-FORMAT = 3; // [0=Club Mate 50cL, 1=Long Neck as 25cL Club Mate or Fritz-kola, 2=Euroform 2, 3=Steinie bottles]
+FORMAT = 0; // [0=Club Mate 50cL, 1=Long Neck as 25cL Club Mate or Fritz-kola, 2=Euroform 2, 3=Steinie bottles]
 
 // Style of the ears to add... or not add. This parameter can add a LOT of calculation time.
-EARS_STYLE = 0; // [0=No ears, 1=Just arcs, 2=Filled ears with the same thickness, 3=Filled ears with the a thinner thickness inside]
+EARS_STYLE = 0; // [0=No ears, 1=Just arcs, 2=Filled ears with the same thickness, 3=Filled ears with the a thinner thickness inside, 4=Filled ears with the same thickness but shifted]
 
 /* [Render] */
 // Whether to render the clip, the body.
@@ -460,10 +460,11 @@ module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_
 }
 
 module ear_with_style(style = 1, depth, thickness, side_len=30, bend_factor=0.5, stretch_factor=1.2, chamfer=1, chamfer_shape="curve", details=true) {
-  if (style == 1 || style == 2 || style == 3) {
+  if (style == 1 || style == 2 || style == 3 || style == 4) {
     // Style 1: Just arcs
     // Style 2: Filled ears with the same thickness
     // Style 3: Filled ears with the a thinner thickness inside
+    // Style 4: Filled ears with the same thickness but shifted
 
     ear(
       depth=depth,
@@ -478,9 +479,10 @@ module ear_with_style(style = 1, depth, thickness, side_len=30, bend_factor=0.5,
   }
 
 
-  if (style == 2 || style == 3) {
+  if (style == 2 || style == 3 || style == 4) {
     // Style 2: Filled ears with the same thickness
     // Style 3: Filled ears with the a thinner thickness inside
+    // Style 4: Filled ears with the same thickness but shifted
 
     thickness_steps = thickness*0.5;
     depth_steps = (depth-thickness)/((side_len / thickness_steps));
-- 
2.50.1


From 7bb36f9f89e957f2dc5cd9d0657f20910b382001 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Thu, 15 Jan 2026 18:29:59 +0100
Subject: [PATCH 19/23] Change a preview  color

Improve the third dimension perception
---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 7af3bbc..d8557f0 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -187,7 +187,7 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
 
   // main cylinder
   if (RENDER_COLOR_CLIP) {
-    color("black") difference() {
+    color("#006168") difference() {
       cylinder(r1=rl+width, r2=ru+width, h=ht);
       difference() {
         union() {
-- 
2.50.1


From ebc235de4281b81c9fc7996896f74d4e4f3f89ed Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Thu, 15 Jan 2026 19:57:13 +0100
Subject: [PATCH 20/23] Add documentation

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 82 +++++++++++++++++++++++-
 1 file changed, 80 insertions(+), 2 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index d8557f0..0542908 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -12,6 +12,10 @@
  * https://www.thingiverse.com/thing:5029374
  * printed at scale 0.2 as glue-ins for additional ears.
  *
+ * This file has also being modified and reformatted by Ajabep to:
+ * - be easier to understand
+ * - be easier to modify and extend
+ * - be easier to use and build
  *
  * The contents of this file are licenced under CC-BY-SA 3.0 Unported.
  * See https://creativecommons.org/licenses/by-sa/3.0/deed for the
@@ -75,6 +79,30 @@ scale([0.2, 0.2, 0.2]) {
     ears_style=EARS_STYLE);
 }
 
+/**
+ * Render a bottle clip with a name, logo and ears (depending the `ears_style` argument) for a bottle given as `format`.
+ *
+ * Parameters:
+ * name: The name to write on the clip
+ * font: The font file to use
+ * logo: The logo file to print on the clip
+ *
+ * format: id of the bottle clip format
+ *            0: Club Mate 50cL
+ *            1: Long Neck as 25cL Club Mate or Fritz-kola
+ *            2: Euroform 2
+ *            3: Steinie bottles (with logo and name)
+ *
+ * ear_style: id of the ear style we want:
+ *               -1 or less: Should NEVER being used. Unknown behavior.
+ *               0: No ears, just a bottle clip with a name and a logo.
+ *               1: Just arcs.
+ *               2: Filled ears with the same thickness
+ *               3: Filled ears with the a thinner thickness inside
+ *               4: Filled ears with the same thickness but shifted
+ *
+ * By default, thus function will generate a clip for a 50cL Club-Mate Bottle, with a headband with cat ears as a logo, and with a cat ears of the clip formed by 2 arcs.
+ */
 module render_bottle_clip(name="", font="", logo="", format=0, ears_style=1) {
   name = name == "" ? "c3cat" : name ;
   font = font == "" ? "write/orbitron.dxf" : font ;
@@ -182,6 +210,25 @@ module logo(logo, rl, ht, ru, width) {
   }
 }
 
+/**
+ * Creates a Bootle Clip with logo and/or text, depending what is asked using the RENDER_COLOR_* variables.
+ *
+ * Parameters:
+ *
+ * Size:
+ * ht: the height of the bottle clip
+ * ru: the radius on the upper side of the clip
+ * rl: the radius on the lower side of the clip
+ * width: the thickness of the bottle clip
+ *
+ * name: The name to write on the clip
+ * font: The font file to use
+ * logo: The logo file to print on the clip
+ *
+ * By default, will create a Club-Mate 0.5L bottle clip.
+ *
+ * An empty logo file will create a headband with cat ears as a logo.
+ */
 module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/orbitron.dxf", logo="") {
   e = 100;  // should be big enough, used for the outer boundary of the text/logo
 
@@ -261,6 +308,12 @@ module outer_cutoff(rl, e, ru, ht, width) {
  * ear_chamfer_shape: The shape of the chamfer: "cone", "curve", "curve-in", "pyramid", maybe some others
  * ear_details: whether to chamfer also the partial arcs
  *
+ * ear_style: id of the ear style we want:
+ *               0 or less: Should NEVER being used. Unknown behavior.
+ *               1: Just arcs.
+ *               2: Filled ears with the same thickness
+ *               3: Filled ears with the a thinner thickness inside
+ *               4: Filled ears with the same thickness but shifted
  */
 module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_depth=2, ear_thickness=.6, ear_side_len=6, ear_bend_factor=0.5, ear_stretch_factor=1.2, ear_chamfer=1, ear_chamfer_shape="curve", ear_details=true, ears_style=1) {
 
@@ -459,6 +512,30 @@ module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_
           }
 }
 
+/**
+ * Module that creates an ear given a style id.
+ *
+ * Parameters:
+ *
+ * style: id of the ear style we want:
+ *           0 or less: Should NEVER being used. Unknown behavior.
+ *           1: Just arcs.
+ *           2: Filled ears with the same thickness
+ *           3: Filled ears with the a thinner thickness inside
+ *           4: Filled ears with the same thickness but shifted
+ *
+ * depth: the depth of the ear
+ * thickness: the thickness of the ear arcs
+ * side_len: the length of one side of the ear base triangle
+ * bend_factor: how much the ear is bent. 1 = half circle, 0.00001 = almost straight
+ * stretch_factor: how much the ear is stretched, useful for fox ears or this kind of shapes
+ *
+ * chamfer: size of the chamfer to apply to the edges
+ * chamfer_shape: The shape of the chamfer: "cone", "curve", "curve-in", "pyramid", maybe some others
+ * details: whether to chamfer also the partial arcs
+ *
+ * By default, this module creates a cat ear countour.
+ */
 module ear_with_style(style = 1, depth, thickness, side_len=30, bend_factor=0.5, stretch_factor=1.2, chamfer=1, chamfer_shape="curve", details=true) {
   if (style == 1 || style == 2 || style == 3 || style == 4) {
     // Style 1: Just arcs
@@ -528,7 +605,7 @@ module ear_with_style(style = 1, depth, thickness, side_len=30, bend_factor=0.5,
   * chamfer_shape: The shape of the chamfer: "cone", "curve", "curve-in", "pyramid", maybe some others
   * details: whether to chamfer also the partial arcs
   *
-  * By default, this module creates an ear.
+  * By default, this module creates a cat ear.
   *
   * I don't remember the original author of this module. I refactored it and improved it a bit. Documentation is from me.
   */
@@ -579,9 +656,10 @@ module ear(depth, thickness, side_len=30, bend_factor=0.5, stretch_factor=1.2, c
   // $hc is the height of $C.
   $hc=-$C.x;
 
-  // If I correctly understood, $alpha should be the angle of the $B$A$C. This should be 60deg... but is not. idk why.
+  // $alpha should be the angle of the $B$A$C. This should is 60deg if `stretch_factor` is `1`, but this angle change with this factor.
   $alpha=asin($hc/$b);
   $beta=$alpha;
+  // $gamma is the $A$C$B angle.
   $gamma=180-$alpha-$beta;
   $delta=180*bend_factor;
   $bend_radius=$a/(2*cos(90-$delta/2));
-- 
2.50.1


From 536b0e5eb14687daeda380921831080c5626ad3c Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Thu, 15 Jan 2026 19:57:25 +0100
Subject: [PATCH 21/23] remove dead code

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 19 -------------------
 1 file changed, 19 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 0542908..9baee81 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -181,16 +181,6 @@ module logo(logo, rl, ht, ru, width) {
                   with_rake=false
                 );
   } else {
-    // The logo has been split in 3 parts. // well was... TODO
-/*
-    rotate([0, 0, -48]) translate([0, 0, ht*3/4-0.1])
-      rotate([90, 0, 0])
-        scale([0.9, 0.9, 1])
-          scale([ht/100, ht/100, 1])
-            translate([-25, -29, 0.5])
-              linear_extrude(height=max(ru,rl)*2)
-                import("logo_1.dxf");
-*/
     translate([0, 0, ht*3/4-0.1])
       rotate([90, 0, 0])
         scale([0.8, 0.8, 1])
@@ -198,15 +188,6 @@ module logo(logo, rl, ht, ru, width) {
             translate([-18, -22, 0.5])
               linear_extrude(height=max(ru, rl)*2)
                 import(logo);
-/*
-    rotate([0, 0, 44]) translate([0, 0, ht*3/4-0.1])
-      rotate([90, 0, 0])
-        scale([0.7, 0.7, 1])
-          scale([ht/100, ht/100, 1])
-            translate([-25, -26, 0.5])
-              linear_extrude(height=max(ru,rl)*2)
-                import("logo_3.dxf");
-*/
   }
 }
 
-- 
2.50.1


From 79710a9d662fec818a6758896bbe18828a896072 Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Thu, 15 Jan 2026 21:36:34 +0100
Subject: [PATCH 22/23] Add parameters to customize the ears at a script level

---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 60 ++++++++++++++++++++++--
 1 file changed, 55 insertions(+), 5 deletions(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 9baee81..ee43243 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -39,6 +39,30 @@ FORMAT = 0; // [0=Club Mate 50cL, 1=Long Neck as 25cL Club Mate or Fritz-kola, 2
 // Style of the ears to add... or not add. This parameter can add a LOT of calculation time.
 EARS_STYLE = 0; // [0=No ears, 1=Just arcs, 2=Filled ears with the same thickness, 3=Filled ears with the a thinner thickness inside, 4=Filled ears with the same thickness but shifted]
 
+/* [Ear Parameters] */
+
+// Space between both ears.
+SPACE_BETWEEN_EARS = 13;  // .1
+
+// The X orientation of the ears, to give a more organic look. Angle in degree
+EAR_TILT = 15; // .1
+
+// The depth of the ear
+EAR_DEPTH = 2; // .1
+
+// The thickness of the ear arcs
+EAR_THICKNESS = .6; // .1
+
+// The width of the ear
+EAR_SIDE_LEN = 6;
+
+// How much the ear is bent. 1 = half circle, 0.00001 = almost straight
+EAR_BEND_FACTOR = 0.5; // [.01:.01:1]
+
+// How much the ear is stretched, useful for fox ears or this kind of shapes
+EAR_STRETCH_FACTOR = 1.2;
+
+
 /* [Render] */
 // Whether to render the clip, the body.
 RENDER_COLOR_CLIP = true;
@@ -134,13 +158,39 @@ module render_bottle_clip(name="", font="", logo="", format=0, ears_style=1) {
 
       // Render ears if requested
       if (ears_style > 0) {
-        ears(ht=ht, ru=ru, rl=rl, clip_width=width, ears_style=ears_style);
+        ears(
+          ht=ht,
+          ru=ru,
+          rl=rl,
+          clip_width=width,
+          space_between_ears=SPACE_BETWEEN_EARS,
+          ear_tilt=EAR_TILT,
+          ear_depth=EAR_DEPTH,
+          ear_thickness=EAR_THICKNESS,
+          ear_side_len=EAR_SIDE_LEN,
+          ear_bend_factor=EAR_BEND_FACTOR,
+          ear_stretch_factor=EAR_STRETCH_FACTOR,
+          ears_style=ears_style
+        );
       }
     }
 
     // Render ears if requested
     if (ears_style > 0 && RENDER_COLOR_EARS) {
-      ears(ht=ht, ru=ru, rl=rl, clip_width=width, ears_style=ears_style);
+        ears(
+          ht=ht,
+          ru=ru,
+          rl=rl,
+          clip_width=width,
+          space_between_ears=SPACE_BETWEEN_EARS,
+          ear_tilt=EAR_TILT,
+          ear_depth=EAR_DEPTH,
+          ear_thickness=EAR_THICKNESS,
+          ear_side_len=EAR_SIDE_LEN,
+          ear_bend_factor=EAR_BEND_FACTOR,
+          ear_stretch_factor=EAR_STRETCH_FACTOR,
+          ears_style=ears_style
+        );
     }
   }
 }
@@ -281,7 +331,7 @@ module outer_cutoff(rl, e, ru, ht, width) {
  *
  * ear_depth: the depth of the ear
  * ear_thickness: the thickness of the ear arcs
- * ear_side_len: the length of one side of the ear base triangle
+ * ear_side_len: the width of the ear
  * ear_bend_factor: how much the ear is bent. 1 = half circle, 0.00001 = almost straight
  * ear_stretch_factor: how much the ear is stretched, useful for fox ears or this kind of shapes
  *
@@ -507,7 +557,7 @@ module ears(ht, ru, rl, clip_width, space_between_ears = 15, ear_tilt = 15, ear_
  *
  * depth: the depth of the ear
  * thickness: the thickness of the ear arcs
- * side_len: the length of one side of the ear base triangle
+ * side_len: the width of the ear
  * bend_factor: how much the ear is bent. 1 = half circle, 0.00001 = almost straight
  * stretch_factor: how much the ear is stretched, useful for fox ears or this kind of shapes
  *
@@ -578,7 +628,7 @@ module ear_with_style(style = 1, depth, thickness, side_len=30, bend_factor=0.5,
   *
   * depth: the depth of the ear
   * thickness: the thickness of the ear arcs
-  * side_len: the length of one side of the ear base triangle
+  * side_len: the width of the ear
   * bend_factor: how much the ear is bent. 1 = half circle, 0.00001 = almost straight
   * stretch_factor: how much the ear is stretched, useful for fox ears or this kind of shapes
   *
-- 
2.50.1


From daee24ebc9fde5056e379cf467318741fd04631b Mon Sep 17 00:00:00 2001
From: Ajabep <ajabep@tutanota.com>
Date: Fri, 16 Jan 2026 23:06:54 +0100
Subject: [PATCH 23/23] Adjust the thickness

Less precise, but faster and smaller files
---
 c3cat-bottle-clip/c3cat-bottle-clip.scad | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index ee43243..0abfe50 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -51,7 +51,7 @@ EAR_TILT = 15; // .1
 EAR_DEPTH = 2; // .1
 
 // The thickness of the ear arcs
-EAR_THICKNESS = .6; // .1
+EAR_THICKNESS = 1; // .1
 
 // The width of the ear
 EAR_SIDE_LEN = 6;
-- 
2.50.1