Control equipment to perforate, cut, and stencil plaster wallboard.
What does a Knife Operator do?
Sets up and controls equipment to perforate, cut, and stencil plaster wallboard and convey board through kiln: Adjusts perforator and knife according to specifications, using gauge and handtools. Inserts code letters in stenciling drum, using tweezers and fills drum with ink. Adjusts speed of roller and accelerator conveyors according to size of board. Sets speed of kiln conveyor for specified drying time. Inspects wallboard emerging from drying kiln for unsealed edges and surface blemishes. Removes defective wallboard from conveyor line. Measures and weighs wallboard samples for conformance to specifications, using rule, micrometer, and scale.