Corner for enclosure

I'm building an enclosure for the Ender 3, and needed a way to connect wood panels. A quick search led to nothing that looked sturdy, so I made my own in Tinkercad... it's meant for 6mm thick panels and a quick test with my 80x80 cm squares make it look fairly strong. Takes about 2 hours and 15 minutes to print for me, and that sucks given than I still need at least 5 more (thinking of making a different version for the frontal panel) lol

*Update*: do **NOT** use them for the top corners! A test fit highlighted that they're **not strong enough upside down**

*Update 2*: while still untested (need time to print them) I added "Enclosure Top" and "Enclosure Top Door" to use at the top of the enclosure as the name suggests. They need to be printed as they are to avoid issues with layer separation, as that was the cause of failure. If you print multiple ones at the same time, it's still easy to tell them apart, the bottom ones have the reinforcement triangle, top ones don't but that pa