mic-table-clamp.scad

   1 // -*- C -*-
   2
   3 // print Stem and Wingnut on High Detail
   4 // but adjust shell thickness to 2mm
   5
   6 // others on Standard
   7
   8 include <threads.scad>
   9 include <camera-mount.scad>
  10
  11 positive_dia = inch * 3/8. - 0.375;
  12 positive_l = inch * 1/2.;
  13
  14 stem_l = 40;
  15 stem_dia = 12;
  16 stem_th = 3;
  17 stem_ceil = 2;
  18 stem_base_th  = 4;
  19 stem_base_dia = 25;
  20 stem_inner_l = 30;
  21
  22 thread_nom = 8;
  23 thread_pitch = 1.25;
  24 thread_act = thread_nom + 0.600;
  25
  26 wingnut_th = 5;
  27 wingnut_wall = 4;
  28 wingnut_wing_mindia = 17.0;
  29 wingnut_wing_xrad = 8;
  30 wingnut_wing_xh = 5;
  31 wingnut_wing_th = 3;
  32
  33 $test= true;
  34 ///$test= false;
  35
  36 //$fa= 3;
  37 //$fs= 0.2;
  38
  39 // calculated
  40
  41 wingnut_cnr = wingnut_wing_th/2 -0.1;
  42
  43 module OurThread(l){
  44   translate([0,0,-0.01])
  45     metric_thread(diameter=thread_act, pitch=thread_pitch,
  46                   leadin=3, internal=true,
  47                   test=$test, length=l);
  48 }
  49
  50 module Stem(){ ////toplevel
  51   translate([0,0, stem_l -0.1])
  52     english_thread(diameter=positive_dia/inch, threads_per_inch=16,
  53                    leadin=1, test=$test,
  54                    length= (positive_l + 0.1) / inch);
  55
  56   difference(){
  57     union(){
  58       cylinder(r= stem_dia/2 * 1/(0.5 * sqrt(3)),
  59                h = stem_l,
  60                $fn=6);
  61       cylinder(r= stem_base_dia/2,
  62                h = stem_base_th);
  63     }
  64     OurThread(stem_inner_l);
  65   }
  66 }
  67
  68 module Wingnut(){ ////toplevel
  69   difference(){
  70     union(){
  71       cylinder(r= (thread_nom+wingnut_wall)/2,
  72                h= wingnut_th);
  73       minkowski(){
  74         sphere(r= wingnut_cnr);
  75         translate([0,0, wingnut_cnr*0.5])
  76           linear_extrude(height= wingnut_wing_xh + wingnut_th
  77                          - wingnut_cnr*1.5)
  78           square([wingnut_wing_mindia + wingnut_wing_xrad*2 - wingnut_cnr*2,
  79                   wingnut_wing_th - wingnut_cnr*2],
  80                  center=true);
  81       }
  82     }
  83     translate([0,0, wingnut_th])
  84       linear_extrude(height= wingnut_wing_xh+1)
  85       square(wingnut_wing_mindia, center=true);
  86     translate([0,0, wingnut_th])
  87       rotate([180,0,0])
  88       OurThread(wingnut_th+3);
  89     mirror([0,0,1])
  90       linear_extrude(height=5)
  91       square(center=true, wingnut_wing_mindia*2);
  92   }
  93 }
  94
  95 //Wingnut();
  96 //Stem();