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_default_l =   10.0;
   9
  10 negative_tpi = 20;
  11 negative_pitch = inch/negative_tpi;
  12 negative_chamfer = negative_pitch/2;
  13
  14 module CameraMountThread(l){
  15   rotate([0,180,0])
  16     english_thread(diameter=negative_dia/inch,
  17                    threads_per_inch=negative_tpi,
  18                    leadin=0, internal=true, test=$test,
  19                    length= (l + inch/19) / inch);
  20   hull(){
  21     translate([0,0, negative_chamfer])
  22       cylinder(r= negative_dia/2 + negative_chamfer*2,
  23                h=1);
  24     mirror([0,0,1])
  25       cylinder(r= negative_dia/2 - negative_chamfer*2,
  26                    h= negative_chamfer*3);
  27   }
  28 }