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Holes // v_wall(h=4, l=height-rail_clearance*2-thickness); // top horizontal rib // bottom right [right_edge, rotate_vector_sin * rail_depth] // top horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle-bottom h rib // h_wall(h=4, l=right_rib_x); // middle-bottom h rib h_wall(h=1.6, l=right_rib_x); // middle horizontal rib // h_wall(h=1.6, l=right_rib_x); // one more vertical to mount a circuit board sideways on // h = hole_depth, center = true, $fn = smooth } module rail(height) { difference.

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