[WIP] pressfit ears

catear_headband.scad

@@ -3,7 +3,7 @@ include <globals.scad>;
 use <headband.scad>;
 use <chamfer.scad>;
 
-module catear(height, thickness, fractal=0, side_len=30, bend_factor=0.5, stretch_factor=1.2, debug=false, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, details=true) {
+module catear(height, thickness, fractal=0, side_len=30, bend_factor=0.5, stretch_factor=1.2, debug=false, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, details=true, end_caps=true) {
   $A=[0, side_len/2];
   $B=[0,-side_len/2];
   $C=[-(side_len/2/sin(120))*1.5*stretch_factor, 0];
@@ -42,15 +42,17 @@ module catear(height, thickness, fractal=0, side_len=30, bend_factor=0.5, stretc
                 thickness=thickness,
                 height=height
               );
-  translate($A) color("#aaaaaa")
+  if (end_caps) {
-    chamfer(size=chamfer, child_h=height, child_bot=-height/2, shape=chamfer_shape)
+    translate($A) color("#aaaaaa")
-      cylinder(h=height, d=thickness, center=true);
+      chamfer(size=chamfer, child_h=height, child_bot=-height/2, shape=chamfer_shape)
-  translate($B) color("#bbbbbb")
+        cylinder(h=height, d=thickness, center=true);
-    chamfer(size=chamfer, child_h=height, child_bot=-height/2, shape=chamfer_shape)
+    translate($B) color("#bbbbbb")
-      cylinder(h=height, d=thickness, center=true);
+      chamfer(size=chamfer, child_h=height, child_bot=-height/2, shape=chamfer_shape)
-  translate($C) color("#cccccc")
+        cylinder(h=height, d=thickness, center=true);
-    chamfer(size=chamfer, child_h=height, child_bot=-height/2, shape=chamfer_shape)
+    translate($C) color("#cccccc")
-      cylinder(h=height, d=thickness, center=true);
+      chamfer(size=chamfer, child_h=height, child_bot=-height/2, shape=chamfer_shape)
+        cylinder(h=height, d=thickness, center=true);
+  }
 
   if (debug) {
     echo("A", $A, "a", $a, "alpha", $alpha);

pressfit_bunnyears.scad

@@ -0,0 +1,38 @@
+include <globals.scad>;
+
+use <catear_headband.scad>;
+use <pressfit_headband.scad>;
+use <chamfer.scad>;
+
+$fn=90;
+EAR_SCALE = 0.5;
+EAR_BEND_FACTOR = 0.2;
+EAR_STRETCH_FACTOR = 8;
+STEP_SIZE = .5;
+
+//difference() {
+  translate([20*pow(0.99, SIZE/2*EAR_SCALE-1-THICKNESS), 0, -THICKNESS/2])
+    /*union()*/ for (i=[0:STEP_SIZE:SIZE/2*EAR_SCALE-1]) {
+      j=pow(0.99, i);
+      chamfer_ = floor(abs(2*i/(SIZE/2*EAR_SCALE-1)-1));
+      translate([-j*20, 0, 0])
+        rotate(90, [0, 1, 0])
+          /*chamfer(size=1, child_h=1, child_bot=-0.5, shape=CHAMFER_SHAPE)*/ {
+            echo("i", i, "j", j, "chamfer_", chamfer_);
+            catear(
+              debug=DEBUG,
+              height=INSERTICLE_Z*1.2,
+              thickness=THICKNESS,
+              side_len=SIZE/2*EAR_SCALE-i,
+              bend_factor=EAR_BEND_FACTOR,
+              stretch_factor=EAR_STRETCH_FACTOR,
+              chamfer=0, //chamfer_,
+              chamfer_shape=CHAMFER_SHAPE,
+              details=false,
+              end_caps=false
+            );
+          }
+    }
+//  translate([0, 0, -THICKNESS]) cube([100, 100, THICKNESS], center=true);
+//  scale([1, 1, 2]) inserticle();
+//}

pressfit_catears.scad

@@ -7,26 +7,28 @@ use <chamfer.scad>;
 EAR_SCALE = 1.5;
 EAR_BEND_FACTOR = 0.15;
 EAR_STRETCH_FACTOR = 1.2;
+STEP_SIZE = 1;
 
 difference() {
-translate([20*pow(0.99, SIZE/2*EAR_SCALE-1-THICKNESS), 0, -THICKNESS/2])
+  translate([20*pow(0.99, SIZE/2*EAR_SCALE-1-THICKNESS), 0, -THICKNESS/2])
-union() for (i=[0:SIZE/2*EAR_SCALE-1]) {
+    union() for (i=[0:STEP_SIZE:SIZE/2*EAR_SCALE-1]) {
-  j=pow(0.99, i);
+      j=pow(0.99, i);
-  chamfer_ = floor(abs(2*i/(SIZE/2*EAR_SCALE-1)-1));
+      chamfer_ = floor(abs(2*i/(SIZE/2*EAR_SCALE-1)-1));
-  translate([-j*20, 0, 0])
+      translate([-j*20, 0, 0])
-    rotate(90, [0, 1, 0])
+        rotate(90, [0, 1, 0])
-      /*chamfer(size=1, child_h=1, child_bot=-0.5, shape=CHAMFER_SHAPE)*/
+          /*chamfer(size=1, child_h=1, child_bot=-0.5, shape=CHAMFER_SHAPE)*/
-        catear(
+            catear(
-          debug=DEBUG,
+              debug=DEBUG,
-          height=INSERTICLE_Z*1.2,
+              height=INSERTICLE_Z*1.2,
-          thickness=THICKNESS,
+              thickness=THICKNESS,
-          side_len=SIZE/2*EAR_SCALE-i,
+              side_len=SIZE/2*EAR_SCALE-i,
-          bend_factor=EAR_BEND_FACTOR,
+              bend_factor=EAR_BEND_FACTOR,
-          stretch_factor=EAR_STRETCH_FACTOR,
+              stretch_factor=EAR_STRETCH_FACTOR,
-          chamfer=chamfer_,
+              chamfer=0, //chamfer_,
-          chamfer_shape=CHAMFER_SHAPE
+              chamfer_shape=CHAMFER_SHAPE,
-        );
+              end_caps=false
-}
+            );
-translate([0, 0, -THICKNESS]) cube([100, 100, THICKNESS], center=true);
+    }
-scale([1, 1, 2]) inserticle();
+  translate([0, 0, -THICKNESS]) cube([100, 100, THICKNESS], center=true);
+  scale([1, 1, 2]) inserticle();
 }