Hi everyone.

1st post on here seems like a lot of you really know your stuff and I'm hoping someone can help.

The company I work for recently bought a 8th hand 10ftx5ft cnc flatbed router with vacuum bed. Everything seems okay with it when cutting flat panels, letters etc but as soon as I try to cut a v groove for a tray sign there is different depths along my cut. It's 3mm ACM and I'm cutting at a depth of 2.2mm.

After stripping it down and adjust the sinking that was happening between the frame I had an allowance of 0.06mm which I felt was acceptable.

Low and behold I ran the file and same again. Managed to fold it on one edge and another was tough but it did fold. Just can't seem to get my frame, spoil board and vacuum any flatter.

I am in no way an expert and only know the basics but Google and YouTube videos have came to no prevail. All axis are true and level the fram is off but I've compensated for that.

Any help would be greatly appreciated.