A professional who lays out, mills, drills, turns, grinds, fits, and assembles castings and parts to make metal foundry patterns, core boxes, and match plates, using handtools and machine tools, and analyzing specifications, according to knowledge of patternmaking methods. Respnsibilities include:

• Studies blueprint of part to be cast, computes dimensions, and plans sequence of operations.
• Measures, marks, and scribes layout on castings.
• Sets up and operates machine tools, such as milling machines, lathes, drill presses, and grinders, to machine castings to specifications.
• Assembles pattern, using handtools, and bolts, screws, or other fasteners.
• Cleans and hand finishes workpiece, using emery cloth, files, scrapers, and powered hand grinders.
• Verifies conformance of machined pattern to blueprint specifications, using templates and measuring instruments, such as scale, calipers, and micrometers.
• May make templates for layout and inspection.
• May operate welding equipment in assembling pattern.