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{ 2 * nothing, shafthole_cutoff_arc_height + 2 * nothing cube(cutoff_size, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = setscrew_hole_radius, h = shafthole_height, $fn = sphere_indents_faces); height = 128.5; // A little less then 3U // Thickness of module (HP) width = 24; // [1:1:84] width = 36; // [1:1:84] // margins from edges h_margin = hole_dist_side + thickness; working_height = height - v_margin - title_font_size*1.5; working_height = height / 2 + hole_diameter + hole_margin*2; side_margin = (board_width.

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