Autoleveller

Can you try mounting the PCB at 90 degrees and doing a test cut.
If the problem is a fault in the PCB stock, you should see the shallow bands also rotated.
If the bands stay in the same position related to you mill, you can't blame the PCBs.

So far I have only gone as shallow as ~0.003 thou and use ...

Hi and thank you for a great product.
I have only just started with CNC's so I have had a lot of learning to do.
Autoleveler has allowed me to produce some nice boards much faster than I thought I was going to.

I started with an old XP PC for the MACH3 machine so I was not surprised when I couldn't ...