I've never had good success with cutting stainless, lately I've tried to stick to 303 which cuts like butter, but now I've got to cut 316.
I'm using a home made Bridgeport CNC, very accurate, and trying to cut 316 Stainless Plate 1/4" Thick. I'm using a new 4 flute Solid Carbide End Mill, 5 IPM at 800 RPMs, .07" DOC. I don't get more than 1/2" - 1" before the thing glows red and that's with HEAVY Mist coolant, brand new bit is toast. Is it possible I'm going way to slow. I just hate to waste another bit. What should I be doing? THANKS I NEED HELP!