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Question

Difficulty: EasyChisels, Files, and Planes

When using a standard hand file to smooth the edge of a metal workpiece, what is the correct technique for the return stroke?

  1. A
    Apply firm downward pressure on the backstroke to double the rate of material removal
  2. Lift the file slightly or relieve forward pressure while drawing it backAnswer
  3. C
    Draw the file backward across the grain at a right angle on each return pass
  4. D
    Twist the file handle a quarter-turn during the return stroke to clear metal chips

Answer

Lift the file slightly or relieve forward pressure while drawing it back
Standard hand files are manufactured with teeth that point forward, meaning they cut only when pushed forward across the workpiece. Relieving pressure or slightly lifting the file on the return stroke prevents the teeth from rubbing backward and dulling.

Step-by-Step Solution

1
Identify the cutting geometry of hand file teeth
Hand file teeth are slanted forward to cut exclusively during the forward push stroke.
Understanding the unidirectional cutting motion determines correct tool handling.
2
Determine the proper return stroke motion
Relieving downward pressure or lifting the file away from the surface during the backward draw stroke preserves the cutting edge.
Applying downward pressure during the backward stroke rolls over and ruins the sharp cutting edges without cutting.

Key Concept

Hand file cutting mechanics and proper stroke technique
Estimated Time:45s
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Topics

Chisels, Files, and Planes

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