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Reserves the right sub-panel top_row = height - v_margin; working_increment = (working_height-v_margin+thickness) / (9); // generally-useful spacing amount for vertical columns of stuff right_rib_thickness = 2; hole_radius = hole_diameter / 2; hole_margin = 1; top_margin = (board_height - hole_vdist) / 2; hole_margin.

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