Metal Spinning, originally a traditional craft to produce a 'bowl' or that shape which evolved into pots, pans, pitchers etc.
Before the era of hydraulics and pressing, a boiler maker would have spun two halves (typically in brass) and joined them - resulting in a sphere or float.
ND Spinning - boasting a beautifully authentic hand spun aluminium light pendant/shade.
Priced on order.
