Fuse metal together by directing huge amounts of energy into small areas.
Assists ETCHER, HAND in etching designs on copper printing rollers: Trucks rollers from storage area to etching room. Inserts mandrel through roller and screws collar onto mandrel to hold roller in position. Assists ETCHER, HAND in lifting rollers onto machine brackets and in transferring rollers from one vat to another. Turns crank on mandrel to rotate rollers in rinsing and etching vats. Cleans solvent and acid-resistant coating from etched rollers by rubbing with sawdust or using absorbent cloth. Removes mandrel from etched rollers and trucks rollers to mending bench. Drains vats of spent etching solutions and performs other duties as described under HELPER Master Title.