Can anybody recommend what type and shape of insert to use to turn a 
2" piece of pre-hardened 4140?

   I need to get a fairly decent finish, and I understand I will need 
one insert for roughing, and a different one for finishing.  It's a part 
for my CNC mill, and I will be turning it on my 12x36 lathe.

-- 
-Mark

Ne M'oubliez   ---Family Motto
Hope for the best, plan for the worst   ---Personal Motto


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