Hi! Thank you :-) There's a very thorough PDF included in the files which gives you detailed instructions. Download that and see what you think. The perspex is 3mm thick perspex/acrylic sheet. It actually needs to be 320mm x 312mm, but these things have a tolerance when cutting so I ordered 319mm x 311mm which fits fine. Better to be slightly small than too big. Cast Acrylic Sheet is your best bet. No need to get the edge polished or the corners rounded. It goes into a 4-piece frame with long slots to hold it. So no, 3mm is it I'm afraid. But that's easily thick enough and 2mm would be too floppy. I made one version with 3mm picture mounting board for testing. I've kept it, as it's useful if I'm printing something as a surprise for someone in the house! It also includes a jig to print to make sure your corners are 100% square. You can do it without, but it makes it foolproof. If the frame isn't square it sticks in the rails. There's also some little fillets in case your hinges on the case aren't quite square (my X1C was, P1S wasn't) to push the outer frame a tiny bit to square it up. There are 5 magnets top and bottom, at regular intervals. So, you can slide it a bit open and use just 4 magnets, or 3, etc. Mine will stay on the 1 magnet setting, but at that point you might as well take it off entirely in case the magnets lose their grip. I was so happy to do away with the original door. A pain in the wotsits to work around, and an accident waiting to happen. I considered trying to reuse the door glass, but the handle and corner brackets forbade, plus it's too heavy to rely on a small frame. Give it a go, I'd love to see it!

I don't see a PDF file in the .3mf file, or in the "Project" tab when I load it into Bambu Studio", but on the upside, I think I can build it with your description provided here. Are you in Australia by any chance?

oops. Never mind. I found it, buried deep. Thanks! My printer is acting up a bit right now, but as soon as I can, i'll be building it.