Positions parts in jig and files, chisels, and grinds parts, as indicated, to fit them together.
May heat parts with acetylene torch and dip parts in cyanide bath to harden.
Periodically compares dimensions of assembly to blueprint specifications, using square, rule, and callipers.
Works to tolerances of 0625 inch.
Lays out parts dimensions on worktable, using square, chalk line, and soapstone.
Tack-welds scrap metal to outline to provide jig for assembly.