hole-repair-20191117.scad

   1 // -*- C -*-
   2
   3 post_dia = 23.0;
   4 post_height = 20;
   5
   6 th = 4;
   7
   8 nom_hole = 22;
   9 min_r = 15 + nom_hole/2;
  10 maj_r = 30 + nom_hole/2;
  11
  12 postwall_th = 2;
  13
  14 //$fa=1;
  15 //$fs=1;
  16
  17 module Profile(r) {
  18   polygon([ [0,        0],
  19             [maj_r,    0],
  20             [maj_r-th, th],
  21             [0,        th] ]);
  22 }
  23
  24 module Body(){
  25   hull(){
  26     for (x= [-1,+1] * (maj_r-min_r))
  27       translate([x,0,0])
  28         rotate_extrude()
  29         Profile(min_r);
  30   }
  31 }
  32
  33 module Post(){
  34   difference(){
  35     cylinder(r= post_dia/2, h= post_height);
  36     translate([0,0,-1])
  37       cylinder(r= post_dia/2 - postwall_th, h= post_height+2);
  38   }
  39 }
  40
  41 //Body();
  42 Post();