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90° base rotation angle to align the indentations with the setscrew (in mm). If you want a D-shaped shafthole cross-section. 0 to keep it round. [mm] /* [External Indicator (optional)] */ // Four hole threshold (HP h_margin = hole_dist_side + thickness; width_mm = hp_mm(h); } else if ( hsh >= 0 ) { rotate_extrude(convexity=10.

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