A professional who tends combining-roll machine that presses and impregnates synthetic resins and glass fibers between continuous sheets of plastics film to form homogenous sheeting of specified thickness preparatory to molding operations. Respnsibilities include:

• Turns crank to adjust opening between rolls to form sheeting of specified thickness.
• Verifies width of opening with feeler gauge.
• Threads plastics film through rolls.
• Presses switch to start machine and observes flow of materials through machine to detect foreign particles and machine malfunctions.
• Moves lever to adjust tension on sheeting and to synchronize speed of sheeting with speed of belt.