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A hair of margin $fn=FN; title_font = 10; // Number of faces on the left sub-panel top_row = height - v_margin; working_increment = (working_height-v_margin+thickness) / (9); // generally-useful spacing amount for vertical columns of stuff col_left = thickness + 6 + tolerance; // left_rib_x = thickness * 1; //right_rib_x = width_mm - thickness*2; // draw a "vertical" wall // h = shafthole_height, $fn = 3, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom.

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