So, preliminary dimensional accuracy tests are done. I just did a couple of 3 inch circle perimeters cut on the inside and outside. It was in MDF, so there is some slop in the numbers, but X and Y measurements were within a few thousandths of an inch each other, and within about 4 thousandths of an inch compared to actual dimensions on the file.
The bed does need some slight leveling though. It’s about half a mm higher on one side, and the mdf bed has a very slight bit of unevenness to it. Nothing too major though.
All in all I would say that’s not bad for a first go. Now off to try some designs for things I want to make!