What is the recommended starter pressure when tapping by hand or machine?

What is the recommended starter pressure when tapping by hand or machine?

• A. A firm downward pressure until started
• B. A light pressure and gentle feed
• C. Sideways pressure to align
• D. No pressure until the thread begins

Answer: (A)

When you start a tap, the tool must bite into the material so the thread form begins cleanly from the first turns. Firm downward pressure helps the tap engage straight and start cutting, which keeps the tap from wandering, binding, or breaking. Once the cut has begun and the thread is established, you can ease off to a steady, lighter feed to finish the threads without overload. If you use only light pressure, the tap may not start cutting reliably and can skitter or drift; applying sideways pressure risks misalignment or breaking the tap; waiting for no pressure until the thread begins means the tap won’t engage properly and the thread won’t form correctly.

When you start a tap, the tool must bite into the material so the thread form begins cleanly from the first turns. Firm downward pressure helps the tap engage straight and start cutting, which keeps the tap from wandering, binding, or breaking. Once the cut has begun and the thread is established, you can ease off to a steady, lighter feed to finish the threads without overload. If you use only light pressure, the tap may not start cutting reliably and can skitter or drift; applying sideways pressure risks misalignment or breaking the tap; waiting for no pressure until the thread begins means the tap won’t engage properly and the thread won’t form correctly.