Going to mill the plates out at work, anyone recommend 3000 or 6000 alum. Leaning towards 6000 from what im reading.
Thanks in advance
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I don’t think we actually ever really discussed it since it should not really matter. 
At least the XZ plates for the LR3 sold in the store were 5052. I know some have used 6061.
Disclaimer: I have never cut aluminum.