Rotating Dice

A dice without corners or edges

Anybody who claims that a dice can't be round has clearly never seen this CNC workpiece! The rotating dice consists of a ball and plate manufactured on a CNC turning machine. Together with eight steel balls, one of which is of a different color, the dice is ready to use – just spin the larger ball and its colored miniature counterpart at the bottom indicates the number you have "rolled".

Siemens Professional Education in Nuremberg, Germany, uses this design as a practice workpiece as part of the training of industrial mechanics. It proves a highlight among the apprentices every year.

All information required for the reproduction, tool data and ShopTurn machining plans and NC programs are summarized in the following sections.


The programs and files have been created and tested with the greatest care in accordance with the requirements listed in the manufacturing description. However, the manufacturing of the workpieces offered is at your own risk. Siemens accepts no liability for damage to property or personal injury. Workpiece manufacture is only permitted for private and not industrial use. Passing on the manufactured workpieces or production documents to a third party for commercial gain is strictly prohibited.