Thanks rgriff and mike@af for that information. Yes, I'm aware of the feed rate vs materials information, but I was looking more for the kind of practical information from the experience of machining very small parts using very small tools. From mike@af it sounds like the 10,000 rpm pulley set (I'm assuming from Sherline) might work except for the very small items. This is good to know as I've got ball end mills down to 1/64" I'm hoping to use.
Thanks again for the help.