module Hook(){
difference(){
linear_extrude(height=width) Plan();
- translate([-50, circle_outer_rad + tab_sz - width/2, width/2])
+ if (false)
+ translate([-50, circle_outer_rad + tab_sz - width/2, width/2])
rotate([0,90,0])
cylinder(r= screw_hole_dia / 2, h=100, $fn=50);
}