8 module ExtrusionSect(){
10 toph = opening_height/2 + opening_protrh;
14 translate([cr/2, opening_height/2 + cr/2]) {
17 translate([-cr,10]) square([cr*2, 1]);
22 translate([-opening_depth, -toph]) {
25 square([opening_depth+6, toph*2+10]);
26 square([opening_depth+2, toph*2]);