A professional who operates machines to make barrel hoops from strap steel. Respnsibilities include:

• Installs and adjusts rollers, punches, and shear plates in hoop-punch-and-coiler machines, using wrenches.
• Places roll of strap steel on spindle, inserts end in feed rollers and starts machine.
• Removes punched and coiled hoops.
• Aligns holes in ends of coiled hoops on shank of rivets in guide slots of riveting machine.
• Slides hoop with protruding rivets under reciprocating hammer that flattens rivet shanks.
• Places hoop over mandrel of hoop-flaring machine and moves leg control to expand jaws that flare hoop to conform to shape of barrel.
• May be designated according to machine operated as hoop-flaring-machine operator; hoop-punch-and-coiler operator; hoop-riveting machine operator.