Hello there!

Wondering if someone could give me some guidance. I'm designing two parts for a CNC router which I'm planning to get machined, I haven't chosen a manufacturer yet.

They measure

400mm x 217.5mm x 25-30mm
250mm x 265 x 25-30mm

In anyone's opinion, would a surfacing cut of 0.5mm cause any distortion in those plate sizes? How light a cut could I get done while still giving a consistent finish on stock 7075 plate?

Cheers