light-bracket.scad

   1 remote_width=56.2;
   2 remote_height=124.7;
   3 remote_thick=6.8;
   4 mainhole_thick=remote_thick+1;
   5 hook_hook_thick=1.5;
   6 hook_stem_thick=1.5;
   7 hook_hook_len=1.5;
   8 base_thick=6;
   9 base_margin=4.0;
  10 base_width=remote_width-base_margin*2;
  11 base_height=remote_height-base_margin*2;
  12 base_edgewidth=4;
  13
  14 // origin is base of mainhole
  15
  16 module mainhole() {
  17         translate([ -remote_width/2, 0, 0 ])
  18         cube(center=false,
  19                 size=[ remote_width, remote_height, mainhole_thick ] );
  20 }
  21
  22 module hhook(extent) {
  23         difference() {
  24                 translate([ -hook_stem_thick, 0, -base_thick*2 ])
  25                         cube(center=false,
  26                                 size=[
  27                         hook_stem_thick+base_margin+base_edgewidth-1,
  28                         extent,
  29                         base_thick*2 + mainhole_thick + hook_hook_thick
  30                                         ]);
  31                 translate([hook_hook_len, -5, 0])
  32                          cube(center=false, size=[ 20, extent+10, 30 ]);
  33         }
  34 }
  35
  36 module hhookside(extent) {
  37         translate([ -remote_width/2, 0, 0 ])
  38                 hhook(extent);
  39 }
  40
  41 module hhookbot(extent) {
  42         rotate(a=90, v=[0,0,1]) hhook(extent);
  43 }
  44
  45 module hstuff() {
  46         translate([0,70,0]) hhookside(15);
  47         translate([0,10,0]) hhookside(15);
  48         translate([-10,0,0]) hhookbot(15);
  49 }
  50
  51 module slashes() {
  52         for (y=[-35 : 35 : +40])
  53                 translate([0,y,0])
  54                         rotate(v=[0,0,1],a=45)
  55                                 cube(center=true, [ 5,200,200 ]);
  56 }
  57
  58 module base() {
  59         translate([ 0, base_height/2 + base_margin, -base_thick/2 ])
  60         intersection() {
  61                 cube(center=true,
  62                         [ base_width, base_height, base_thick+10 ]);
  63                 union() {
  64                         difference() {
  65                                 cube(center=true, [ 200,200,200 ]);
  66                                 cube(center=true,
  67                                         [ base_width - base_edgewidth*2,
  68                                           base_height - base_edgewidth*2,
  69                                           base_thick + 15 ]);
  70
  71                         }
  72                         slashes();
  73                         mirror([1,0,0]) slashes();
  74                 }
  75         }
  76 //      translate([-base_width/2, base_margin, -base_thick*2])
  77 //              cube(center=false, [base_width,base_height,base_thick+10]);
  78 }
  79
  80 screw_ys=[ 20, remote_height-30 ];
  81
  82 module stuff() {
  83         hstuff();
  84         mirror([1,0,0]) hstuff();
  85         base();
  86         for (y=screw_ys) translate([0, y, -20])
  87                 cylinder(r=7.5, h=21);
  88 }
  89
  90 module screwhole(holedia, csdia) {
  91         // screw goes along z axis downwards
  92         // origin is base of countersink
  93         // results are positive, so this should be subtracted
  94         translate([0,0,-100]) cylinder(h=200, r=holedia/2);
  95         cylinder(h=100, r=csdia/2);
  96 }
  97
  98 difference() {
  99         stuff();
 100         mainhole();
 101         for (y=screw_ys) translate([0, y, -base_thick+2]) screwhole(4,10);
 102         translate([0,0,-50 - base_thick])
 103                 cube(center=true,[300,300,100]); // print bed
 104 }