diffuser.scad

   1 inner_d = 38;
   2 outer_d = 44;
   3 wall_thickness = 1.5;
   4 diaphragm_thickness = 0.8;
   5 cable_thickness = 4;
   6
   7 base_h = 4;
   8 shader_h = 6;
   9 holder_h = 16;
  10
  11 epsilon = 0.01;
  12
  13 module diaphragm() {
  14         cylinder(h=diaphragm_thickness, r = outer_d/2 + wall_thickness-epsilon);
  15 };
  16
  17 module shader() {
  18         difference() {
  19                 cylinder(r=outer_d/2 + wall_thickness, h = shader_h);
  20                 translate([0, 0, -epsilon/2])
  21                         cylinder(r1 = outer_d/2+wall_thickness/2, r2=outer_d/2+wall_thickness/2-(2/5)*(outer_d-inner_d),
  22                                 h = shader_h + epsilon);
  23         };
  24 };
  25
  26 module base() {
  27         difference() {
  28                 cylinder(r =  outer_d/2 + wall_thickness, h = base_h + epsilon);
  29                 translate([0, 0, - epsilon/2])
  30                         cylinder(r = inner_d/2, h = base_h + 2*epsilon);
  31         };
  32 };
  33
  34 module outer_clip() {
  35         difference() {
  36                 cylinder(r = outer_d/2 + wall_thickness, h = holder_h-base_h);
  37                 translate([0, 0, -epsilon/2])
  38                         cylinder(r = outer_d/2, h = holder_h - base_h + epsilon);
  39         };
  40
  41         intersection() {
  42                 difference() {
  43                         cylinder(r = outer_d/2 + wall_thickness - epsilon, h = holder_h-base_h-epsilon);
  44                         translate([-50, -(inner_d-3)/2, -epsilon])
  45                                 cube([100, inner_d-3, 100]);
  46                 };
  47                 rotate_extrude()
  48                         translate([outer_d/2+1.5, holder_h-base_h-1, 0])
  49                                 circle(r = 2);
  50         };
  51 };
  52
  53 module belt_clip() {
  54         intersection() { // belt clip arc
  55                 difference() {
  56                         cylinder(r = outer_d/2 + 2*wall_thickness + cable_thickness, h = shader_h + holder_h);
  57                         translate([0, 0, -epsilon/2])
  58                                 cylinder(r = outer_d/2 + wall_thickness + cable_thickness, h = shader_h + holder_h + epsilon);
  59                 };
  60                 translate([0, -6, 0])
  61                 cube([outer_d + 4*wall_thickness + 2*cable_thickness + epsilon, 12, shader_h + holder_h]);
  62         };
  63         difference() { // connect the clip to the body
  64                 rotate([0, 0, -10])
  65                         translate([outer_d/2-3, 0, 0])
  66                         cylinder(r = cable_thickness + 2*wall_thickness + 3, h = shader_h + holder_h);
  67                 translate([0, 0, -epsilon/2])
  68                         cylinder(r = outer_d/2 + wall_thickness - epsilon, h = shader_h + holder_h + epsilon);
  69                 translate([0, -4, -epsilon/2])
  70                 cube([outer_d/2 + 2*wall_thickness + cable_thickness + epsilon, 20, holder_h + shader_h + epsilon]);
  71
  72         };
  73         intersection() { // hold the cable in position
  74                 rotate([0, 0, 10])
  75                 translate([outer_d/2+2*wall_thickness + cable_thickness, 0, 0])
  76                 cylinder(r = 2.75, h = shader_h + holder_h);
  77                 translate([0, 0, -epsilon/2])
  78                         cylinder(r = outer_d/2 + 2*wall_thickness + cable_thickness, h = shader_h + holder_h + epsilon);
  79         };
  80 };
  81
  82 module main() {
  83         shader();
  84         translate([0, 0, shader_h])
  85                 color([1, 0.5, 0.5, 0.2]) diaphragm();
  86
  87         translate([0, 0, shader_h-epsilon])
  88                 base();
  89
  90         translate([0, 0, shader_h+base_h-2*epsilon])
  91                 outer_clip();
  92
  93         belt_clip();
  94 };
  95
  96 main($fn = 128);