Advice needed on feeds and speeds!

[blackburn mark]

deapth of cut with a 6mm tool would be dependant on your machines rigidity
with a router we tend to feed a shallow cut quicker rather than deap one slower... if that makes sense

if your chips are like dust your tool life may be vastly shortend as it will be doing quite a bit of rubbing and only taking a cut on every other revolution or worse

the ideal is to be taking a consistant healthy chip... if your aluminium is gummy it can be really hard to acheive this and plenty of WD40 and an old tooth brush to clear as much of wast as you cut is as good as it gets

it this stage it may be worth being really experimental with your speeds and feeds and eccept any tool loses as part of the process of finding the sweet spot

being conservative can damage your tool just like being agressive

in my opinion, if you have an idea of a healthy chip it doesnt matter what your cutting, youll have the ability to nudge the feed or spindle speed on the hoof and over time youll start to add your knowlege at the g-code level