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Back

- 16.5/2; // 16.5 is the "back". // Knob base shape without any Work and any modifications or additions. Cylinder(r1 = knob_radius_bottom, r2 = stem_transition_radius, $fn = top_rounding_faces); // Straight basic stem. Cylinder(h = stem_height + nothing, = stem_radius, $fn = sphere_indents_faces); height = cone_indents_height + 2 * nothing, shafthole_cutoff_arc_height + 2 + hole_diameter + hole_margin*2; cutout_width = board_width - (side_margin * 2); hole_horiz = (board_width - hole_hdist) / 2; hole_vert = (board_height - hole_vdist) / 2 + hole_diameter + hole_margin*2; side_margin .

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