Aluminum with a 63-631

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It's a half inch single flute upcut spiral. The chipload calculator says I should be running this bit at 1.86IPS, that seems way to fast to my inexperienced self. Any words of wisdom here? I'd rather not trash a hundred dollar bit because I was going to fast or too slow and I haven't learned to trust the math yet. My depth of cut should be 0.040"ish, yes?

Thanks for any advice!

[araugh]

For anyone interested, here are a few pictures of this first project so far.

https://lh6.googleusercontent.com/-nKO37Xb9JIo/UDJrIwkasjI/AAAAAAAACYg/xdR5noJYIFw/s1449/2012-08-20_12-47-19_248.jpg
https://lh3.googleusercontent.com/-Pra_g6eh47o/UDJrKGGO7oI/AAAAAAAACYo/bXyJlUGCq0w/s1449/2012-08-20_12-47-28_948.jpg
https://lh3.googleusercontent.com/-yR47kH7iByw/UDJrLzU1eeI/AAAAAAAACYw/77Nmash28lI/s1449/2012-08-20_12-47-44_299.jpg

[araugh]

Well for anyone that was curious, it worked great! I decided to trust the damn math and it worked great. To the point where actually I think my pass depth may have been set too conservatively, but it worked excellently and pocketed out the aluminum in a third of the time as the 65-026. Highly recommended.