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1; //right_rib_x = width_mm - thickness*2; left_rib_x = thickness * 1; h_wall(h=4, l=right_rib_x); } module mounting_hole_m3(h=thickness, flange=8, style="nut"){ cube([flange, flange, h], center=true); if (style == "nut"){ // a round cutout (to use an m3 nut into // a hexagonal cutout (undersize to melt an m3 nut into // a hexagonal cutout (undersize to melt an m3 nut into.

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