A professional who operates lathe to wind compression, extension, and torsion springs of specified diameter, pitch, and length from wire or bar stock.

• Lifts roll of stock onto holding device, threads stock through guides, and clamps wire to arbor.
• Starts machine to revolve arbor until specified number of coils are wound, guiding coils by hand or using pitch tool.
• Cuts spring from stock, using shears, and reverses arbor direction to remove spring.
• Measures spring for conformance to specifications, using micrometers and gauges, and adjusts arbor and pitch tool to obtain specified product.
• Closes ends of springs, using mallet.
• Squares and flattens spring ends, using grinding machine.
• May adjust length and pitch of formed springs, using mallet and wedge.
• May wind wire springs, using hand-powered lathe, and be designated hand spring coiler.
• May be designated according to product as flexible-shaft winder.