Quote Originally Posted by JohnHaine View Post
What grade of aluminium? Many alloys are horrible to machine. From memory T6061 is good.
I assumed most likely 6061 in the US, as he is new to CNC. Equivalent in terms of availability and popularity would be 6082 T6 in the UK - very similar properties and applications.

This is 6082 machined on a 40 yo machine:
https://www.instagram.com/p/ByKcPFYJ_iQ/?img_index=1

It can be done!