Friday, September 27, 2024
Carbide End Mills
Once you use them, you will wonder why you would ever use High Speed Steel (HSS) again. I am trimming a piece of 1.01" aluminum square to .990". For the first side, I used the first 1/2" end mill that I found in the drawer which was HSS. For the second side, I used my 1/2" carbide end mill. Much faster cutting and a nicer finish.
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If you consult machining tables and SFM calculations (Surface feet per minute) the differing speeds between carbide and steel cutting can sometimes be outside of what your machine can do, particularly on a lathe.
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