The belt tensioners needed a little adjustment.

I put -0.1mm on the internal surfaces of the 'screw/belt holder' part. As it was almost impossible to get belt into it otherwise. I also made the outer collar part 3% larger, otherwise it was too tight a fit.

That done, they look good and should work well.

Today, however, while i wait for a second motherboard for a super computer I'm building for a client to play flight sim 2020 on - I am playing with polycarbonate.

Currently running at 260c and 70 for the bed.
Given how different my pet-g bed temps are (60c) to the universally accepted temp, I thought I'd start low this time :-)

So just printing a simple small flat scraper - as I have a pet-g one for comparision.
It's 2mm thick , tests nothing apart from bed adhesion and printing temp.
Also only running at 50mm/s - mainly because 260c is on the cool side for polycarbonate and there's no point pushing it for the first print :-)