flyscreen-handle.scad

   1 // -*- C -*-
   2
   3 opening_height = 7.84;
   4 opening_depth = 7.88;
   5 openingcnr_dia = 2.75;
   6 opening_topprotr = 1.54;
   7
   8 gap = 0.25;
   9
  10 retain_empir_angle = 20;
  11 retain_empir_stalkw = 1.0;
  12 retain_rad = 1.5;
  13
  14 topprotr_rad = 0.35;
  15
  16 bot_overlap = 5;
  17 bot_w = 3;
  18
  19 handle_d = 2;
  20 handle_w = 8;
  21 handle_rh = 2;
  22 handle_rcut = 3;
  23
  24 cutout_gap = 1.5;
  25
  26 // calculated
  27
  28 ins_irad = openingcnr_dia/2 + gap;
  29 ins_orad = openingcnr_dia/2 + opening_height - gap;
  30 ins_th = ins_orad - ins_irad;
  31
  32 handle_x0 = ins_irad;
  33 handle_h = bot_overlap + ins_th;
  34 handle_y0 = -ins_orad-bot_overlap;
  35 handle_y1 = handle_y0 + handle_h;
  36
  37 handle_x1 = handle_x0 + bot_w + handle_w;
  38
  39 module InsertSection(){
  40   hull(){
  41     translate([-ins_orad, 0]) square([ins_th, 0.1]);
  42     translate([-ins_irad - topprotr_rad,
  43                opening_topprotr - topprotr_rad])
  44       circle(r=topprotr_rad, $fn=10);
  45   }
  46   translate([0, -ins_orad]) square([ins_irad+1, ins_th]);
  47   intersection(){
  48     translate([0.1,0.1]) mirror([1,1]) square([100,100]);
  49     difference(){
  50       circle(r= ins_orad);
  51       circle(r= ins_irad, $fn=20);
  52     }
  53   }
  54 }
  55
  56 module HandleSection(){
  57   difference(){
  58     hull(){
  59       translate([handle_x0, handle_y0])
  60         square([bot_w, handle_h]);
  61       for (y= [handle_y1 - handle_rh/2,
  62                handle_y1 - ins_th + handle_rh/2]) {
  63         translate([handle_x1 - handle_rh/2, y])
  64           circle(r= handle_rh/2, $fn=20);
  65       }
  66     }
  67     hull(){
  68       for (x= [handle_x0 + bot_w + handle_rcut/2,
  69                handle_x1 - handle_rh/2 - handle_rcut/2]) {
  70         translate([x, handle_y1])
  71           circle(r = handle_rcut/2, $fn=20);
  72       }
  73     }
  74   }
  75   hull(){
  76     for (y= [handle_y1 -   handle_rh/2,
  77              handle_y1 - 3*handle_rh/2])
  78       translate([handle_x1 - handle_rh/2, y])
  79         circle(r = handle_rh/2, $fn=20);
  80   }
  81 }
  82
  83 module RetainSection(){
  84   rotate(180-retain_empir_angle)
  85     translate([0,ins_orad]) circle(r=retain_rad, $fn=20);
  86 }
  87
  88 module RetainCutout(gapping=false){
  89   rotate(180-retain_empir_angle)
  90     translate([0,ins_orad]) {
  91     difference(){
  92       circle(r=retain_rad + cutout_gap, $fn=20);
  93       if (!gapping)
  94         rotate(180 + retain_empir_angle/2)
  95           translate([0, -retain_empir_stalkw])
  96           square([100, retain_empir_stalkw*2]);
  97     }
  98   }
  99 }
 100
 101 module GappingSection(){
 102   difference(){
 103     InsertSection();
 104     RetainCutout(true);
 105   }
 106   HandleSection();
 107 }
 108
 109 module WithRetainSection(){
 110   difference(){
 111     InsertSection();
 112     RetainCutout();
 113   }
 114   HandleSection();
 115   RetainSection();
 116 }
 117
 118 module BasicSection(){
 119   InsertSection();
 120   HandleSection();
 121 }
 122
 123 module Demo(){
 124   difference(){
 125     InsertSection();
 126     RetainCutout();
 127   }
 128   HandleSection();
 129   color("red") RetainSection();
 130 }
 131
 132 module Test(){
 133   linear_extrude(height=2) WithRetainSection();
 134 }
 135
 136 //Demo();
 137 //WithRetainSection();
 138 //BasicSection();
 139 GappingSection();
 140 //Test();