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Draw a "vertical" wall // h = shafthole_height, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = knob_faces); // Create a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin*2 - title_font_size; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff col_left = h_margin; working_height = height - hole_dist_top); echo("Putting a hole with radius: ", hole_r , " at ", width_mm - h_margin; input_column = h_margin; col_right = width_mm - h_margin; left_rib_x = thickness + 9.5/2 + tolerance*2; //three.

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