Machine setters in the metal industries set up machines that cut and form all types of metal parts. Machine setters in the plastic industries set up machines, most commonly injection-molding machines, that produce a variety of plastic consumer goods such as toys, tubing, and auto parts. Setup workers read blueprints or other instructions, plan the order of operations, and set up machines. They often use computer programs in this process. Setters or technicians are responsible for repairing any major problems that crop up during production.