mic-camera-adapter.scad

   1 // -*- C -*-
   2
   3 include <threads.scad>
   4
   5 inch = 25.4;
   6
   7 positive_dia = inch * 3/8.;
   8 positive_l = inch * 1/2.;
   9
  10 negative_dia = inch * 1/4.;
  11 negative_l =   10.0;
  12
  13 negative_wall = 4;
  14 midsection = 4;
  15
  16 $test = true;
  17 //$test = false;
  18
  19 module Adapter(){
  20   translate([0,0,-0.1])
  21     english_thread(diameter=positive_dia/inch, threads_per_inch=16,
  22                    leadin=1, test=$test,
  23                    length= (positive_l + 0.1) / inch);
  24   rotate([180,0,0]) {
  25     difference(){
  26       cylinder(r= negative_dia/2 + negative_wall,
  27                h = negative_l + midsection);
  28       translate([0,0, midsection])
  29         english_thread(diameter=negative_dia/inch, threads_per_inch=20,
  30                        leadin=0, internal=true, test=$test,
  31                        length= (negative_l + inch/19) / inch);
  32     }
  33   }
  34 }
  35
  36 Adapter();