Program a machine that applies acid to precision-etch metal and plastic.
Tends one or several machines that wrap plastic, fiber, or metal bands at intervals around strands of braid to form tips of shoelaces and cut braid into laces: Sets measuring device to cut laces of specified length, using handtools and rule guide on machine. Threads end of braid through guides and carrier, and around measuring device and feeder wheels, or ties end of braid to braid in machine. Positions container of glue or solvent solution on machine or pours solution into container attached to machine. Places roll of tipping material in holder and draws end through guides and feeder roller of tipping mechanism. Starts machine that feeds braid through gluing, tipping, and cutting mechanisms and drops laces onto racks. Removes laces from rack, picks out defective laces, and ties laces in bundles.