diff --git a/catear_headband_esp_18mm.scad b/catear_headband_esp_18mm.scad
index 48c903c..b0863b8 100644
--- a/catear_headband_esp_18mm.scad
+++ b/catear_headband_esp_18mm.scad
@@ -4,9 +4,18 @@ use <headband.scad>;
 use <chamfer.scad>;
 use <catear_headband.scad>;
 
+$fn=30;
 HEIGHT=18;
 
-module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART, stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND, ear_scale=1.5, ear_bend_factor=0.15, ear_stretch_factor=1.2, ear_angle=42, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, with_rake=true, details=true) {
+EAR_SKEW=0.6;
+EAR_SCALE=1.4;
+EAR_BEND_FACTOR=0.04;
+EAR_STRETCH_FACTOR=1.2;
+EAR_ANGLE=42;
+WITH_RAKE=true;
+DETAILS=true;
+
+module catear_headband_esp(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART, stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND, ear_scale=EAR_SCALE, ear_bend_factor=EAR_BEND_FACTOR, ear_stretch_factor=EAR_STRETCH_FACTOR, ear_angle=EAR_ANGLE, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, with_rake=WITH_RAKE, details=DETAILS, $fn=$fn, ear_skew=EAR_SKEW) {
 
   $a=size/2*ear_scale;
   $delta=2*(acos($a/(size*2))-90);
@@ -14,7 +23,7 @@ module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNES
 
   union() {
     rotate( ear_angle, [0, 0, 1]) {
-      translate([-ear_offset, 0, 0]) catear_v1(
+      translate([-ear_offset, 0, 0]) catear_v3(
         debug=debug,
         height=height,
         thickness=thickness,
@@ -23,11 +32,14 @@ module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNES
         stretch_factor=ear_stretch_factor,
         chamfer=chamfer,
         chamfer_shape=chamfer_shape,
-        details=details
+        details=details,
+        $fn=$fn,
+        skew=ear_skew
       );
     }
-    rotate(-ear_angle, [0, 0, 1]) {
-      translate([-ear_offset, 0, 0]) catear_v1(
+    scale([1, -1, 1])
+    rotate(ear_angle, [0, 0, 1]) {
+      translate([-ear_offset, 0, 0]) catear_v3(
         debug=false,
         height=height,
         thickness=thickness,
@@ -36,7 +48,9 @@ module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNES
         stretch_factor=ear_stretch_factor,
         chamfer=chamfer,
         chamfer_shape=chamfer_shape,
-        details=details
+        details=details,
+        $fn=$fn,
+        skew=ear_skew
       );
     }
     headband(
@@ -48,23 +62,23 @@ module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNES
       tip_len=tip_len,
       tip_bend=tip_bend,
       with_rake=with_rake,
-      details=false
+      details=false,
+      $fn=$fn
     );
   };
 }
 
-difference() {
-  translate([0, 0, HEIGHT/2])
-    catear_headband(chamfer=0, with_rake=false);
-  translate([0, 0, 6]) {
-    cube([100, 100, HEIGHT]);
-    rotate(90) cube([100, 100, HEIGHT]);
-    rotate(180) cube([100, 100, HEIGHT]);
-    translate([0, -60, HEIGHT/2]) rotate(35) cube([70, 70, HEIGHT], center=true);
-    rotate(-90+180*PART, [0, 0, 1])
-      translate([0, -SIZE, HEIGHT-6])
-        color("orange")
-          rotate([90, 0, 0])
-            cylinder(r=HEIGHT-6, h=2*THICKNESS, center=true);
-  } 
+translate([0, 0, 6])
+  rotate(-90)
+    difference() {
+      translate([0, 0, HEIGHT/2-6]) catear_headband_esp(chamfer=0, with_rake=false);
+      translate([-5, -5, 0]) cube([110, 110, HEIGHT]);
+      rotate(90) translate([-5, -5, 0]) cube([110, 110, HEIGHT]);
+      rotate(180) translate([-5, -5, 0]) cube([110, 110, HEIGHT]);
+      translate([0, -60, HEIGHT/2]) rotate(35) cube([70, 70, HEIGHT], center=true);
+      rotate(-90+180*PART, [0, 0, 1])
+        translate([0, -SIZE, HEIGHT-6])
+          color("orange")
+            rotate([90, 0, 0])
+              cylinder(r=HEIGHT-6, h=2*THICKNESS, center=true);
 }