Question 195General Subjects - QMED
70% to passIt is necessary to 'chalk' a file when the metal you are filing is _______________.
Aaluminum
Bmonel
Cmild steel
Dstainless steel
AI Explanation
The correct answer is A) aluminum. When filing aluminum, it is necessary to 'chalk' the file to prevent the metal from gumming up or clogging the file teeth. Aluminum is a softer metal that can easily fill the file's grooves, reducing its cutting ability. Chalking the file creates a protective layer that helps prevent this issue. The other options (B - monel, C - mild steel, D - stainless steel) do not require chalking the file, as these harder metals do not have the same tendency to clog or gum up the file in the same way as the softer aluminum.
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