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= knob_radius_bottom, r2 = stem_transition_radius, $fn = top_rounding_faces square(top_rounding_radius + pad, top_rounding_radius + pad); rotate_extrude(convexity = 5, $fn = sphere_indents_faces); height = 266 + tolerance; // left_rib_x = thickness * 1; right_rib_x = width_mm - right_rib_thickness; // projection: make a 2d version v_wall(h=4, l=height-rail_clearance*2, th=right_rib_thickness); // top left [left_edge, 0], // drop to axis [left_edge, -extra_depth], // bottom right [right_edge, rotate_vector_sin * height + rotate_vector_sin * rail_depth] // top right [left_edge + height * rotate_vector_cos, rotate_vector_sin * rail_depth] // top left [left_edge, 0], // drop to axis [left_edge, -extra_depth], // top edge or circumference using spheres (or rather regular polyhedra) arranged in a circle. Used only where users want round outlines by specifying ≥30 faces. Quality == "preview") ? 0.5 : quality.

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