diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index e51e373..e922c2c 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -25,6 +25,13 @@
  * licensing terms.
  */
 
+NAME = "c3cat";
+RENDER_COLOR_1 = true; // used for clip body
+RENDER_COLOR_2 = true; // used for logo and one small ear
+RENDER_COLOR_3 = true; // used for name and other small ear
+SMALL_EARS = true;
+$fn=360;
+
 include <write/Write.scad>
 
 /**
@@ -51,13 +58,17 @@ include <write/Write.scad>
  */
 scale([0.2, 0.2, 0.2]) {
   difference() {
-    scale([5, 5, 5]) rotate(45, [0, 0, 1]) bottle_clip(name="c3cat");
-    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);
+    if (SMALL_EARS) {
+      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();
+    }
   }
 
-  translate([0,  5*5, 0]) catear();
-  rotate(180) translate([0,  5*5, 0]) catear();
+  if (SMALL_EARS) {
+    if (RENDER_COLOR_2) {translate([0,  5*5, 0]) catear();}
+    if (RENDER_COLOR_3) {rotate(180) translate([0,  5*5, 0]) catear();}
+  }
 }
 
 module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/orbitron.dxf", logo="") {
@@ -67,45 +78,65 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
   difference() {
     rotate([0,0,-45]) union() {
       // main cylinder
-      cylinder(r1=rl+width, r2=ru+width, h=ht);
+      if (RENDER_COLOR_1) {cylinder(r1=rl+width, r2=ru+width, h=ht);}
       // text and logo
       if(logo == "") {
-        color("orange") writecylinder(name, [0,0,0], rl+0.5, ht/13*7, h=ht/13*4, t=max(rl,ru), font=font);
-        translate([4.7, -rl, ht*1.08]) rotate(-10, [1, 0, 0]) rotate(76, [0, 1, 0]) scale([0.08, 2, 0.08]) color("red") import("catears.stl");
+        if (RENDER_COLOR_3) {
+          color("orange")
+            writecylinder(name, [0,0,0], rl+0.5, ht/13*7, h=ht/13*4, t=max(rl,ru), font=font);
+        }
+        if (RENDER_COLOR_2) {
+          translate([4.7, -rl, ht*1.08])
+            rotate(-10, [1, 0, 0])
+              rotate(76, [0, 1, 0])
+                scale([0.08, 2, 0.08])
+                  color("red")
+                    import("catears.stl");
+        }
       } else {
-        color("orange") writecylinder(name, [0,0,0], rl+0.5, ht/13*7, h=ht/13*4, t=max(rl,ru), font=font);
+        if (RENDER_COLOR_3) {
+          color("orange")
+            writecylinder(name, [0,0,0], rl+0.5, ht/13*7, h=ht/13*4, t=max(rl,ru), font=font);
+        }
 
-        // The logo has been split in 3 parts.
+        if (RENDER_COLOR_2) {
+          // The logo has been split in 3 parts. // well the ohm one was ...
 /*
-        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");
 */
+        }
       }
     }
-    // inner cylinder which is substracted
-    translate([0,0,-1])
-      cylinder(r1=rl, r2=ru, h=ht+2);
+    if (RENDER_COLOR_1) {
+      // inner cylinder which is substracted
+      translate([0,0,-1])
+        cylinder(r1=rl, r2=ru, h=ht+2);
+    } else {
+      // main cylinder which is subtracted when not rendering color 1
+      cylinder(r1=rl+width, r2=ru+width, h=ht);
+    }
     // outer cylinder which is substracted, so the text and the logo end
     // somewhere on the outside ;-)
     difference () {
diff --git a/fs-cover-cat.scad b/fs-cover-cat.scad
new file mode 100644
index 0000000..8210a0c
--- /dev/null
+++ b/fs-cover-cat.scad
@@ -0,0 +1,91 @@
+/**
+ * This requires
+ * https://files.printables.com/media/prints/451501/stls/4205518_58958bba-4c36-4995-b4e7-da5abd1ba821/loveboard-cover-r2.stl
+ * 
+ * to be placed under `./stls/LoveBoard-cover-R2.stl` in order to work
+ * but it needs a run in meshlabs uniform fcae orientation filter for
+ * openscad to be happy with it
+ * 
+ * if rendering is missing the ear infill, `Design` > `Flush Caches`
+ * may be required.
+ */
+ 
+include <headband.scad>
+use <catear_headband.scad>
+
+HEIGHT=11;
+THICKNESS=1;
+SIDE_LEN=12;
+BEND_FACTOR=0.15;
+STRETCH_FACTOR=1.2;
+CHAMFER=0;
+CHAMFER_SHAPE="none";
+DEBUG=false;
+
+FILL=true;
+FILL_HEIGHT_FACTOR=0.9;
+FILL_HEIGHT_FALLOFF_STEP=0;
+FILL_HEIGHT_FALLOFF_FACTOR=0.98;
+FILL_HEIGHT_FALLOFF_EXPONENT_FACTOR=3;
+FILL_STEP=0.5;
+
+module fs_cover() {
+  translate([2.5, 0, 0])
+  rotate(180, [0, 0, 1])
+    translate([0, 0, 17])
+      rotate(90, [1, 0, 0])
+        import("stls/fs-cover.stl");  
+}
+
+module fs_cover_cat() {
+  $fn=90;
+  union() {
+    difference() {
+      union() {
+        for (i=[-1,1])
+          scale([i, 1, 1]) 
+            translate([-13, 4, 5.5])
+              rotate(-80) {
+                union() catear(
+                  height=HEIGHT,
+                  thickness=THICKNESS,
+                  side_len=SIDE_LEN,
+                  bend_factor=BEND_FACTOR,
+                  stretch_factor=STRETCH_FACTOR,
+                  debug=DEBUG,
+                  chamfer=CHAMFER,
+                  chamfer_shape=CHAMFER_SHAPE
+                );
+                if (FILL) {
+                  echo("BEGIN FILL");
+                  for (i=[FILL_STEP:FILL_STEP:(SIDE_LEN-FILL_STEP)])
+                    color([0, (256-i*8)/256,0]) {
+                      fill_height=(
+                        HEIGHT * FILL_HEIGHT_FACTOR
+                      * pow(FILL_HEIGHT_FALLOFF_FACTOR,
+                          (SIDE_LEN-1-i)*FILL_HEIGHT_FALLOFF_EXPONENT_FACTOR)
+                      - ((SIDE_LEN-1-i)*FILL_HEIGHT_FALLOFF_STEP)
+                      );
+                      echo([i, fill_height]);
+                      translate([0, 0, (fill_height-HEIGHT)/2])
+                      union() catear(
+                        height=fill_height,
+                        thickness=THICKNESS,
+                        side_len=i,
+                        bend_factor=BEND_FACTOR,
+                        stretch_factor=STRETCH_FACTOR,
+                        chamfer=0,
+                        chamfer_shape=CHAMFER_SHAPE
+                      );
+                    }
+                  echo("END FILL");
+                }
+              }
+      }
+      scale(0.9999) hull() fs_cover();
+    }
+    color("red") fs_cover();
+  }
+}
+
+fs_cover_cat();
\ No newline at end of file
diff --git a/globals.scad b/globals.scad
index 2f53cd2..d3d8a35 100644
--- a/globals.scad
+++ b/globals.scad
@@ -12,7 +12,7 @@ RAKE_WIDTH=1;
 RAKE_STRETCH=1;
 RAKE_CHAMFER=0.5;
 CHAMFER=1;
-CHAMFER_SHAPE="curve";
+CHAMFER_SHAPE="cone";
 
 INSERTICLE_X = 4.6;
 INSERTICLE_Y = 7.4;
diff --git a/pressfit_headband.scad b/pressfit_headband.scad
index 93cc684..2d0fe17 100644
--- a/pressfit_headband.scad
+++ b/pressfit_headband.scad
@@ -2,32 +2,69 @@ include <globals.scad>
 
 use <headband.scad>
 
+RENDER_PLA = true;
+RENDER_PETG = true;
+
 module inserticle() {
-    cube([INSERTICLE_X, INSERTICLE_Y, INSERTICLE_Z], center=true);
+  cube([INSERTICLE_X, INSERTICLE_Y, INSERTICLE_Z], center=true);
 }
 
-module pressfit_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART, stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND) {
-    union() {
-        color("pink") { $a=48;
-            rotate( $a, [0, 0, 1]) {
-                translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
-                translate([-size-3, 0,]) rotate(90, [0, 1, 0]) inserticle();
-            }
-            rotate(-$a, [0, 0, 1]) {
-                translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
-                translate([-size-3, 0,]) rotate(90, [0, 1, 0]) inserticle();
-            }
+module anchored_inserticle() {
+  translate([-1, 0, 0]) rotate(90, [0, 1, 0]) inserticle();
+  rotate(90, [0, 1, 0]) {
+    cube([INSERTICLE_X-2*CHAMFER, INSERTICLE_Y, INSERTICLE_Z], center=true);
+    translate([0, 0, INSERTICLE_Z/2+0.5])
+      cube([INSERTICLE_X/2, INSERTICLE_Y+2, 1], center=true);
+  }
+}
+
+module pla_parts(size, a) {
+  color("pink") {
+    for (i=[-1, 1]) {
+      union() {
+        rotate(i*a, [0, 0, 1]) {
+          translate([-size-3, 0, 0]) anchored_inserticle();
+//          translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
+//          translate([-size-3, 0,]) rotate(90, [0, 1, 0]) {
+//            cube([INSERTICLE_X-2*CHAMFER, INSERTICLE_Y, INSERTICLE_Z], center=true);
+//            translate([0, 0, INSERTICLE_Z/2+0.5])
+//              cube([INSERTICLE_X/2, INSERTICLE_Y+2, 1], center=true);
+//          }
         }
-        headband(
-            size=size,
-            height=height,
-            thickness=thickness,
-            part=part,
-            stretch_len=stretch_len,
-            tip_len=tip_len,
-            tip_bend=tip_bend
-        );
-    };
+      }
+    }
+  }  
+}
+
+module petg_parts(size, height, thickness, part, stretch_len, tip_len, tip_bend) {
+  headband(
+    size=size,
+    height=height,
+    thickness=thickness,
+    part=part,
+    stretch_len=stretch_len,
+    tip_len=tip_len,
+    tip_bend=tip_bend
+  );  
+}
+
+module pressfit_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART,  stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND, a=48) {
+  if (RENDER_PLA && RENDER_PETG) {
+    union() {
+      petg_parts(size, height, thickness, part, stretch_len, tip_len, tip_bend);
+      pla_parts(size, a);
+    }
+  } else {
+    if (RENDER_PETG) {
+      difference() {
+        petg_parts(size, height, thickness, part, stretch_len, tip_len, tip_bend);
+        pla_parts(size, a);
+      }
+    }
+    if (RENDER_PLA) {
+      pla_parts(size, a);
+    }
+  }
 }
 
 pressfit_headband();