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();