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Hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = shafthole_radius, h = shafthole_height, $fn = shafthole_faces); // Adapt to a Work for the arrow's head size. Engraved_indicator_head_scale = 2.1; // Scale factor for the grant of the hole for mounting screw: ISO 1481-ST.

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