It is not recommended to drill a small pilot hole before trying to drill a larger diameter hole in metal.
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Q14: _ does not need capillary action to
Q15: Always securely clamp metal being drilled because
Q16: Bending with heat produces as accurate a
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Q20: The application of a surface layer of
Q21: All metal drill bits have a small
Q23: _ takes place at temperatures below 840
Q24: _ is the process of putting a
Q35: _ is the force that pulls water
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