Bought this end mill and these inserts to face a 1" wide surface, 6061. 1400SFM & IPT of 0.004" for an RPM of 4278 and a feed rate of 34ipm, DOC of only 0.01". Needless to say, the results were not as anticipated. I'm fairly new to machining, so it wouldn't surprise me if I had the inserts backwards or something ridiculous (I don't really think I have the inserts backwards ). WTF!