I got this NOVA3D Elfin2 Printer a few weeks ago and quickly decided it needed a door.

This is not an easy project. This cover is a curved, tapered triangle. I thought carefully about it for a couple days before actually starting. There were still a few surprises, but nothing that couldn't be overcome.

There are a lot of ways to make a door. It could tilt up and back, left to right, it could be larger or perhaps smaller. This design works for me. Everything inside is accessible. The lift-off hinges allow easy door removal. The entire cover can be unclamped and removed if need be.

I wanted straight, thin cuts. The cover is very tough stuff, probably Lexan (polycarbonate), and my hot-knife couldn't cut it. So, I used the Dremel and one of those small, thin diamond wheels. Lay it all out, stretch masking tape, draw straight lines, and free-hand it.

The remainder of the cover was just sitting there, loose and unstable, so I clamped it down.

Once the opening was cut, the hinge parts and adjustable locking clamp were temporarily put into position with hot-melt glue. Then hinge bolt holes were marked and drilled. A little 5-minute epoxy holds door lock on.

I'll post the parts for the adjustable door latch and the other catches as a separate project. They, and all sorts of hinges, latches and catches, magnetic, lift-off and otherwise, can be purchased on amazon or the hardware store. I'd probably buy them next time, rather than go through the hassle of designing and printing something..

Base latch - https://www.thingiverse.com/thing:4690132
Door latch adjustable - https://www.thingiverse.com/thing:4690487