My self-made 3D-printable designs, mainly in OpenSCAD
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shower-knob.scad 569B

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  1. knob_dia = 40.0;
  2. knob_height = 15.0;
  3. knob_wall = 4.0;
  4. post_dia = 13.8 - 0.5;
  5. post_height = 32.0;
  6. pipe_off_x = 6.5 - 0.5;
  7. pipe_off_z = 22.0;
  8. pipe_dia = 20.0;
  9. $fn = 25;
  10. difference() {
  11. cylinder(d = knob_dia, h = knob_height, $fn = 12);
  12. translate([0, 0, knob_wall])
  13. cylinder(d = knob_dia - knob_wall * 2, h = knob_height);
  14. }
  15. difference() {
  16. translate([0, 0, knob_wall])
  17. cylinder(d = post_dia, h = post_height);
  18. translate([post_dia / 2 + pipe_off_x, 10, knob_wall + pipe_off_z])
  19. rotate([90, 0, 0])
  20. cylinder(d = pipe_dia, h = 20);
  21. }