Quote:
Originally posted by bigben2k
Off the top of my head...
Al is pretty soft, and some endmills are available specifically for it.
Copper is much harder, but can still "stick" to the cutting tool. Endmills are usually 2 or 3 flutes, preferably TIN coated (not more, not less), and made of either HSS (high speed steel) which is often a poor choice, cobalt HSS or carbon steel.
If you want specifics: Google!
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i was going to use carbide endmills because they are better than hss and like that i will break less endmills
if i find somewhere i will opt also for 3 flute endmills, i know that i am looking too far but since i don't have a cnc, i need at least good mills.
hara i can explain to you tomorrow at school what flutes are because i don't know how am i going to write it
