The discs for turning polygonal plates are made ??of steel with interchangeable carbide or braze welded tips.
The polygonal turns on workpieces requiring the use of the discs designed and manufactured by Ronzoni Srl in Presezzo (Bergamo), Italy.
The discs for polygonal turning are designed based on the number of faces that must be performed on the workpiece and are mounted on special attachments on multi-spindle lathes.
Ronzoni Srl also makes poligonatores to create ball slots.