Quote:
Originally posted by Albigger
question: i've only milled aluminum and steel (and other misc stuff) before. what type of endmill do you recommend for copper? 4 flute?
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With copper you need at least a tin coated and preferably better endmill IMO. Copper is so dense and soft it causes great pains in milling and drilling. As for the number fo flutes I am not to sure really. I always liked 2 flute for Aluminum because they don't gum up as bad a 3 and 4 flute. I did run a 4 flute tin coated 3/8" end mill into copper and it did real well, but that was 3/8". I kinda think a 1/8" or smaller might gum up real fast in a 4 flute. Someone else can maybe answer that better.