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$fn=FN; /* [Panel] */ // Enable rounding of the top knobs // How much to cut off to create an engraved indicator arrow on the bottom of box [right_edge, -extra_depth], // bottom horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle horizontal rib // h_wall(h=1.6, l=right_rib_x); // one more to mount the circuit board sideways on // h = shafthole_height, $fn.

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