Ok guys, thanks.
Yes, I think I underestimated the workpiece holding part.. At the moment, I've got 4 screws in the corners of the 400mmx200mm sheet and 2 screws in the middle. However, definitely will tape down in the future too.


I'll keep those settings for now then, change to coventional milling (I'm using climb) and do full 1.5mm doc tomorrow. (after securing it better)


I've got air on via a 24l compressor at about 30psi through 2x 1.5mm nossles directly blowing on the cutter, then a vaccuum cleaner connected right there too. No lube however.


So it's possible to get an ok finish on this aluminium?