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Author Question: Sixty degree thread cutting is best done with the compound set at 29 degrees because: A) It ... (Read 50 times)

bobypop

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on: Jul 26, 2018
Sixty degree thread cutting is best done with the compound set at 29 degrees because:
 
  A) It provides a cleaner cutting action
  B) Threads can be cut more quickly than with a straight infeed
  C) Most of the cutting is done on the trailing edge of the tool as it is fed in, but the compound is brought back to zero at the end of each cut causing some cutting on the leading edge on the next pass
  D) It will swing out of the way to make the cross feed micrometer dial more visible

Question 2

After heating to the normalizing temperature, how should the piece be cooled?
 
  A) By cooling slowly in the furnace
  B) By cooling in still air
  C) By quenching in oil
  D) By cooling to 1300 F. (704 C>), holding for several hours and then air cooling


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Edwyer

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Reply #1 on: Jul 26, 2018
Answer to Question 1

A

Answer to Question 2

B


bobypop

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Reply 2 on: Jul 26, 2018
Excellent

triiciiaa

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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