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(pointer) on the left sub-panel right_rib_x = width_mm - hole_dist_side - thickness; // draw panel, subtract holes union() { cube([board_width, board_height, thickness]); cylinder(thickness+standoff_height, r=standoff_radius, $fn=360); cube([cutout_width, cutout_height, thickness+3]); cylinder(h=thickness+standoff_height+3, r=hole_radius, $fn=360); vertex 0 7.13321 6.87796 facet normal.

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