camera-mount.scad

   1 // -*- C -*-
   2
   3 include <threads.scad>
   4
   5 inch = 25.4;
   6
   7 negative_dia = inch * 1/4. + 0.375;
   8 negative_l =   10.0;
   9
  10 negative_tpi = 20;
  11 negative_pitch = inch/negative_tpi;
  12 negative_chamfer = negative_pitch/2;
  13
  14 module CameraMountThread(){
  15   translate([0,0, midsection]) {
  16     english_thread(diameter=negative_dia/inch,
  17                    threads_per_inch=negative_tpi,
  18                    leadin=0, internal=true, test=$test,
  19                    length= (negative_l + inch/19) / inch);
  20     translate([0,0, negative_l]) {
  21       hull(){
  22         translate([0,0, negative_chamfer])
  23           cylinder(r= negative_dia/2 + negative_chamfer*2,
  24                    h=1);
  25         mirror([0,0,1])
  26           cylinder(r= negative_dia/2 - negative_chamfer*2,
  27                    h= negative_chamfer*3);
  28       }
  29     }
  30   }
  31 }