29 November 2011

industrial craftsmanship: metal spinning

Spinning is a sheet metal forming process used to produce rotationally symmetrical parts, like hemispheres and cones. Undercut profiles and parallel-sided parts – like this base of a Mathmos Lava Lamp made from a single piece of material – are possible with split tools (can be taken apart to be removed).

Spinning is used to form aluminium. Anodising is used to protect and add colour to the surface of this material. See also bright anodised aluminium.

Image from The Manufacturing Guides