Metal spinning is a forming process which produces hollow parts that are typically circular in cross-section. The basic spinning process starts with a flat metal disc (blank) which rotates on a lathe. This rotating blank is pressed against a tool (mandrel, chuck) which duplicates the interior of the part. This pushing action over the tool results in a formed part.

The basic metal spun shapes are the hemisphere, cone, cylindrical shell, and venturi as well as others, depicted in Figure 1 below.

Products produced by spinning are utilized in many industries: aerospace, agricultural, computer, ventilation, lighting, marine, food service, automotive, etc.

Metal spinning used to be associated with prototypes and low volume production only. However, with the introduction of automatic lathes, spinning is now a cost effective option for both medium and high volume production. The relatively inexpensive tooling price for spinning still makes this forming method a cost effective one for fabricating prototypes.
                                                                              
                                                                                                                                            Created by PROSPER CNC SPINNING