Hello,
I work for a sign business and we got a cnc router a few years ago.
We have since mastered cutting most sign materials except aluminum sheets.
Currently I want to cut around 200 5"x2.5" plates out of .060 aluminum.
I believe the alloy is 3105 if that matters.
Our table is 4'x2'.
The problems we normally face are rough edges and lifting as well as aluminum gumming up on the bit.
We use to adhere the material to the table with spray adhesive, but have since moved on to double sided tape.
The most success I've had is VERY shallow passes, but it takes so long its not worth the time.
We feel like the sheet is so thin there has to be a way to cut through in 1 or a few passes.

If someone who cuts similar material could recommend a specific bit with speeds and feeds it would be greatly appreciated.
Thanks!