use <./common/common.scad>; RAIL_SPACING_HALF_IN = 30; HALF_IN_RAIL_D = 13; module bolex_matte_box () { $fn = 100; translate([RAIL_SPACING_HALF_IN / 2, 0, 0]) cylinder(r = R(HALF_IN_RAIL_D), h = 50, center = true); translate([-RAIL_SPACING_HALF_IN / 2, 0, 0]) cylinder(r = R(HALF_IN_RAIL_D), h = 50, center = true); } bolex_matte_box();