Raising a Copper Vessel, Start by Sinking

I prefer this method of starting to raise a metal vessel from flat sheet. The other method is angular raising. With this method you don't have start by balancing a sheet of metal against a stake, striking at a scratched on circle to set a base. All you need is a ball peen hammer and a depression in a block of wood, it's fast, effective and the vessel gains some height very quickly.