Swiss turning (also known as Swiss-type machining) aids long, slender components with extremely tight tolerances by moving material through a sliding headstock and bushing. The arrangement reduces deflection and allows complicated geometries, tight concentricity, and high-quality surface finishes- even on difficult materials. The outcome is one of uniform quality on scale, less scrap ... https://www.pshardware.com/blog/precision-matters-why-buy-swiss-turning-parts-online-from-pshardware