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= 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; working_height = height * rotate_vector_cos, rotate_vector_sin * height + rotate_vector_sin * height + rotate_vector_sin * height], // top horizontal rib // h_wall(h=1.6, l=right_rib_x); // one more vertical to mount a circuit board sideways on // h = hole_depth, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = shafthole_radius, h = hole_depth, center = false); z_position = sphere_indents_radius + (enable_stem ? Stem_height : 0) + knob_height - sphere_indents_cutdepth; for (z = [0.

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