wing-screw-support.scad

   1 eps = 0.01;
   2 infty = 100;
   3
   4 width = 30;
   5 depth = 10;
   6 hole_d = 3.5;
   7 wall_angle = 40;
   8 hole_angle = 10;
   9 hole_wall = 2;
  10 wall = 1;
  11 front_h = 0.5;
  12
  13 difference() {
  14         hull() {
  15                 translate([-width/2, 0, 0])
  16                         rotate([hole_angle, 0, 0])
  17                         cube([width, eps, front_h]);
  18                 intersection() {
  19                         translate([0, depth, 0])
  20                                 rotate([hole_angle, 0, 0])
  21                                 translate([0, 0, -infty/2])
  22                                 cylinder(r = hole_d/2 + hole_wall, h = infty);
  23                         translate([-infty/2, -infty/2, 0]) cube(infty); // z > 0
  24                         translate([0, 0, wall])
  25                                 rotate([-90+wall_angle, 0, 0])
  26                                 translate([-infty/2, 0, 0]) cube(infty); // upper side
  27                 }
  28         }
  29         // screw hole
  30         translate([0, depth, 0])
  31                 rotate([hole_angle, 0, 0])
  32                 translate([0, 0, -infty/2])
  33                 cylinder(r = hole_d/2, h = infty);
  34 }
  35
  36