Hello sir, you are looking at a dishing stump made from a 300 oxygen bottle. The concave surface is used to beat metal into round or rounded shapes. The ball is a shotput used for metal forming round or bowl like shapes. Hope that helps.
Got it! Iím assuming your talking cold forging? Do you think the mount for the steel ball will stand up to prolonged pounding? Looks a little lite for heavy forming?
The stump and ball can be used for hot and cold forming. The ball is heavy it should last quite a while. The wheel on the tanks is so I can use different handmade forming tools. Thanks for the interest in my forming tools.