coolants - if you have it available, try paraffin / kerosene, otherwise use ordinary soluble oil coolant.
Speeds / feeds - I've found that super high speeds on aluminium tends to distort the metal and lead to poor finish, thus I'd take the speed/feed up by a given level. I tend to benchmark the...
I'm new to this site, so forgive me if I've put this in the wrong area!
I have certificates/qualifications (English NVQs levels 2 & 3) in Manual Milling and Assembly/Fitting.
Been working in other sectors for 4 or 5 years, and trying to find a short (3 - 6 month) refresher course just to get...