mic-camera-adapter: wip

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/mic-camera-adapter.scad b/mic-camera-adapter.scad
index bbb2ef316c547194b23de63e297bbc5d80f229c6..1ffc71eba0841c02541efcb5a9268e62211c8849 100644 (file)
--- a/mic-camera-adapter.scad
+++ b/mic-camera-adapter.scad
@@ -2,4 +2,26 @@
 
 include <threads.scad>
 
-english_thread();
+inch = 25.4;
+
+positive = inch/2;
+negative = inch/2;
+midsection = 5;
+
+module Adapter(){
+  translate([0,0,-0.1])
+    english_thread(diameter = 3/8., threads_per_inch=16,
+                  leadin=1,
+                  length= (positive + 0.1) / inch);
+  rotate([180,0,0]) {
+    difference(){
+      cylinder(r=10, h=negative + midsection);
+      translate([0,0, midsection])
+       english_thread(diameter = 1/2., threads_per_inch=20,
+                      leadin=1, internal=true,
+                      length=midsection+0.1);
+    }
+  }
+}
+
+Adapter();