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 1ffc71eba0841c02541efcb5a9268e62211c8849..4258416e68664b3cdc2b02a353442d907d0d52d7 100644 (file)
--- a/mic-camera-adapter.scad
+++ b/mic-camera-adapter.scad
@@ -4,22 +4,31 @@ include <threads.scad>
 
 inch = 25.4;
 
-positive = inch/2;
-negative = inch/2;
-midsection = 5;
+positive_dia = inch * 3/8.;
+positive_l = inch * 1/2.;
+
+negative_dia = inch * 1/4.;
+negative_l =   10.0;
+
+negative_wall = 4;
+midsection = 4;
+
+$test = true;
+//$test = false;
 
 module Adapter(){
   translate([0,0,-0.1])
-    english_thread(diameter = 3/8., threads_per_inch=16,
-                  leadin=1,
-                  length= (positive + 0.1) / inch);
+    english_thread(diameter=positive_dia/inch, threads_per_inch=16,
+                  leadin=1, test=$test,
+                  length= (positive_l + 0.1) / inch);
   rotate([180,0,0]) {
     difference(){
-      cylinder(r=10, h=negative + midsection);
+      cylinder(r= negative_dia/2 + negative_wall,
+              h = negative_l + midsection);
       translate([0,0, midsection])
-       english_thread(diameter = 1/2., threads_per_inch=20,
-                      leadin=1, internal=true,
-                      length=midsection+0.1);
+       english_thread(diameter=negative_dia/inch, threads_per_inch=20,
+                      leadin=0, internal=true, test=$test,
+                      length= (negative_l + inch/19) / inch);
     }
   }
 }