deore-crank-remover wip

diff --git a/deore-crank-remover.scad b/deore-crank-remover.scad
new file mode 100644 (file)
index 0000000..8baa08e
--- /dev/null
+++ b/deore-crank-remover.scad
@@ -0,0 +1,34 @@
+// -*- C -*-
+
+outdia=15.1;
+india=13.0;
+depth=10;
+
+eoutrad = outdia/2 - 0.5;
+einrad = india/2 - 2;
+edepth = depth + 3;
+
+handledepth = 5;
+handlewidth = 20;
+handlelength = 70;
+
+module FlatSplines(){
+  for (rot=[0:7]) {
+    rotate([0,0, rot*360/8])
+      for (m=[0,1]) {
+       mirror([m,0,0])
+         polygon([[-0.1, 0],
+                  [-0.01, eoutrad],
+                  [einrad * sin(22.5), einrad * cos(22.5)],
+                  [einrad * sin(22.5), einrad * cos(22.5) - 3],
+                  [1, 0]]);
+      }
+  }
+}
+
+translate([0,0,-1])
+  linear_extrude(height=edepth+1)
+  FlatSplines();
+
+translate([0,0,-handledepth/2])
+  cube([handlelength,handlewidth,handledepth], center=true);