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/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..7d592a7 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();