Toolbits

Question 1

What are the steps to grinding a HSS lathe tool bit?

Answer 1

(1) Grind side relief angle
(2) Grind front relief angle
(3) Grind side/back rake
(4) Radius front edge (slight nose radius)

Question 2

What are the angles for Aluminum tool bits?

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Answer 2

Relief angles: 10*
Back Rake: 25*
Side Rake: 20*

Question 3

What are the angles for Steel tool bits?

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Answer 3

Relief angles: 10*
Back Rake: 10*
Side Rake: 10*

Question 4

What are the angles for Brass tool bits?

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Answer 4

Relief angles: 8*
Back Rake: 0*
Side Rake: 0*