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Top horizontal rib // h_wall(h=4, l=right_rib_x); // bottom horizontal rib //} module make_surface(filename, h) { cylinder(r=hole_r, h=thickness*2); echo("Putting a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin; working_increment = (working_height-v_margin+thickness) / (9); // generally-useful spacing amount for vertical columns of stuff working_height = height - v_margin; working_increment = working_height / (8+tolerance/5); // generally-useful spacing amount for vertical columns of stuff col_left = h_margin; working_increment = working_height / 7; // rows up.

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