What is "good performance" for cutting aluminium?

[axmem]

U said u are to gentle for your tools? U are actually ruing your tool edges going with small depths as the rest of the tool does nothing. Think about going 3mm deep at f800 and u are using more of your cutter cutting surface and won't forcing machine as u going slower but cutting more... So just the thought

[mitchejc]

Thx, yep you are correct about killing the cutters quickly with those shallow cuts, I meant to say I'm too gentle on my old machine. Will do a test cut at 3mm doc cut @ 800 and see how it goes. +- what RPM's are you running for that?