5 hex_across = 12.70 - 0.3;
13 total_th = min_th + extra_th;
14 hex_rad = hex_across / 2 / cos(30);
18 circle(r = hex_rad, $fn = 6);
19 circle(r = screw_dia/2);
25 rectfromto([ -hex_rad, -1],
27 translate([ hex_rad, 0 ])
35 linextr(0, total_th + 1)
37 linextr_y_xz(-hex_across, hex_across)