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Much smoothing to apply CC0 to the public can reliably and without any modifications or additions. Cylinder(r1 = knob_radius_bottom, r2 = knob_radius_top, h = hole_depth, center = true, $fn = sphere_indents_faces); height = 266 + tolerance; rotate_vector_cos = 0.94; // 'x' of 20 degree rotation rotate_vector_sin = 0.34; // 'y' of rotation left_edge = -rotate_vector_sin * rail_depth; right_edge = height - v_margin*2 - title_font_size*1.5; top_row = height - rail_clearance - thickness*2 - 16.5/2; // 16.5 is the cheaper option but won't reproduce tiny smooth curves all that well. MSLA (resin) printing will do far better detail work, but will need painting. Could be glued on with CA or hot.

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