A professional who operates machine to stretch metal sheet, strip, or rod to specified length or flatness, or correct extrusion twist and contour defects. Respnsibilities include:

• Adjusts stretcher blocks to size of metal, using wrench.
• Lifts and positions material in stationary vise.
• Measures metal and compares dimensions to those specified to determine stretch required, using micrometer, tape measure, and tolerance tables.
• Moves controls to clamp metal in stretcher jaws and starts machine to stretch material.
• Verifies amount of stretch by visual inspection or meter readings attached to vises.
• Removes metal and places it on level table to test flatness.
• Records crew time and production record.