www.lovejoytool.com
Click on "Free Stuff"- they got a nifty downloadable calculator for Feeds, Speeds, Horsepower required , RPM, IPM, DOC, WOC, Metal Removal Rate etc etc.
They'll even send you a nice little slide rule calculator thingy that you can play with in the pub
I have no connection with this company other than they sent me a free calculator thingy.