diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 3c42e6f..19a51e7 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -150,8 +150,13 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
     if (RENDER_COLOR_ONE) {
       color("black") difference() {
         cylinder(r1=rl+width, r2=ru+width, h=ht);
-          name(name=name, font=font, rl=rl, ht=ht, ru=ru);
-          logo(logo=logo, rl=rl, ht=ht, ru=ru, width=width);
+        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);
+        }
         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
@@ -164,7 +169,7 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
     if (RENDER_COLOR_TWO) {
       color("orange") difference() {
         name(name=name, font=font, rl=rl, ht=ht, ru=ru);
-        cylinder(r1=rl+width, r2=ru+width, h=ht);
+        cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
         outer_cutoff(rl, e, ru, ht, width);
       }
     }
@@ -172,7 +177,7 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
     if (RENDER_COLOR_THREE) {
       color("yellow") difference() {
         logo(logo=logo, rl=rl, ht=ht, ru=ru, width=2*width);
-        cylinder(r1=rl+width, r2=ru+width, h=ht);
+        cylinder(r1=rl+width/2, r2=ru+width/2, h=ht);
         outer_cutoff(rl, e, ru, ht, width);
       }
     }
diff --git a/generate_bottle_tag.sh b/generate_bottle_tag.sh
new file mode 100755
index 0000000..8ea378d
--- /dev/null
+++ b/generate_bottle_tag.sh
@@ -0,0 +1,57 @@
+#!/bin/sh
+
+# usage: generate_bottle_tag.sh NAME
+
+set -u
+
+VERSION=2.2
+LOGO_FILE='""'
+TINY_EARS=false
+FN=90
+
+NAME="\"$1\""
+
+# usage: render NAME PART
+render() {
+	case "$2" in
+		body)
+			ONE=true
+			TWO=false
+			THREE=false
+			;;
+		name)
+			ONE=false
+			TWO=true
+			THREE=false
+			;;
+		logo)
+			ONE=false
+			TWO=false
+			THREE=true
+			;;
+		*)
+			echo 'fatal: invalid part' >&2
+			exit 1
+			;;
+	esac
+
+	echo rendering "$1" "$2"
+	openscad \
+		-D "\$fn=${FN}" \
+		-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}" \
+		-o "stls/c3cat-bottle-clip-v${VERSION}_${NAME}_${PART}.stl" \
+		c3cat-bottle-clip/c3cat-bottle-clip.scad
+}
+
+cd "$(dirname $0)"
+
+for PART in body logo name
+do
+	render "$NAME" "$PART"
+	sleep 1
+done