fruit-bowl-stand.scad

   1 // -*- C -*-
   2
   3 include <utils.scad>
   4
   5 across = 12.5;
   6 r0 = 71;
   7 h = 36;
   8 feet = 5;
   9
  10 // calculated
  11
  12 r_eff_across = across/2 * cos(360/8/2);
  13
  14 effective_corner = across/2 * [ sin(360/8/2), cos(360/8/2) ];
  15
  16 r_mid = r0 + effective_corner[0];
  17
  18 h_mid = h - effective_corner[1] - r_eff_across;;
  19
  20 module XSection(){
  21   rotate(360/8/2)
  22     circle(r= across/2, $fn=8);
  23 }
  24
  25 module Ring(){
  26   rotate_extrude($fa=1)
  27     translate([r_mid, 0,0])
  28     XSection();
  29 }
  30
  31 module Foot(){
  32   rotate([180,0,0])
  33     linear_extrude(h_mid)
  34     XSection();
  35 }
  36
  37 module Stand(){
  38   Ring();
  39   intersection(){
  40     for (a=[0:feet-1]) {
  41       rotate([0,0, 360*a/feet])
  42         translate([-r_mid, 0,0])
  43         Foot();
  44     }
  45
  46     linextr(-across - h, across)
  47       circle(r= r_mid + r_eff_across, $fa=1);
  48   }
  49 }
  50
  51 Stand();