I am messing with a mill that im currently converting to CNC. I had a few questions about cutting speed and the type of bits to use on aluminum. I have read that faster speeds are needed to cut aluminum, but what speed? My mill only goes up to 3000rpm, is that what to use? Also I have broken a couple of router bits, maybe by trying to cut too fast?(I don’t have any real end mills yet or the R-8 collets for them) I have been testing with the drill head installed with router bits from home depot. I know this isn’t right, but like I said I was just messing around. These are straight cut(not spiral) 2 flute bits. Am I better off with a 4 flute spiral design? Also, is any cooling or lubrication needed for aluminum? I dunno, this is all new to me and I have a lot to learn.
Thanks all.