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ornobtizzi ornobtizzi
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6 years ago
Drilling in too far with a center drill:
 
  A) Makes a sharp outer edge, which is a poor bearing surface
  B) Makes the taper too large
  C) Causes the chips to jam and the drill to heat up
  D) Damages the center drill on the tapered section

 Q. 2

Center drills break as a result of:
 
  A) Too heavy feed and too low speed B) Dropping them on the floor
  C) Too light feed and too high speed D) Allowing chips to form a tangle around them
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ShathenaShathena
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6 years ago
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ornobtizzi Author
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#2
6 years ago
Thank you Jesus, my teacher is bad at explaining
wrote...
#3
6 years ago
Praise the LORD ha ha No worries
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