Raising is a sheet metal forming technique where flat stock is hammered or pressed over a stake, anvil, or die to form a vessel or curved shape. The process compresses the outer edge of the metal, forcing it to thicken and rise into the desired profile. It requires careful annealing to prevent cracking as the metal work-hardens.
Heard on the job
You need to raise the bowl slowly, working in concentric circles from the base up.
Related terms
Work-harden
To increase the hardness of a metal by deforming it while it is cold.
Compound curve
A three-dimensional surface that curves in multiple directions, requiring metal to be stretched or shrunk.
Blanking
A sheet metal cutting operation that punches out a flat profile from a larger piece of stock.