machining Aluminium Tips?

[magicniner]

Air to clear chips and a bit of lube to reduce chip welding and increase cutter life.
There is so much variation from machine to machine that you either need data from someone who has done the same thing on the same machine or you start with about 50% of the recommended feed and see how it goes. You'll get a feel for what your machine will do before spitting the dummy in this way.
Keep a Workshop Log of good working feed/speed/depth/cutter figures, that way you build up a reference of settings for future jobs,

- Nick