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= stem_transition_radius, $fn = top_rounding_faces cylinder(h = stem_transition_height, r1 = stem_radius, $fn = knob_faces); // Create a hole with radius: ", hole_r , " at ", hole_dist_side, height - rail_clearance - thickness*2 - 16.5/2; // 16.5 is the diameter of the indenting spheres. Sphere_indents_count = 7; // generally-useful spacing amount for vertical columns of stuff working_height = height - hole_dist_top); cylinder(r=hole_r, h=thickness*2); echo("Putting a hole for mounting screw: ISO 1481-ST 2.2x6.5.

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