M3 Square Nut for E3D Hemera

If you're anything like me, you've lost all of the square M3 nuts that came with your Hemera.
Now you can print some!

These provide plenty of torque for mounting fan shrouds and other accessories to the Hemera's slotted mounting points. I stress tested a fan shroud mounted with these and it held up, I used a reasonable amount of pulling force and they did not fail.

They can also be used for other things, as its just a square M3 nut and not proprietary to E3D.

The hole is threaded, the threads print pretty well; worst case scenario you can cut the threads with an M3 bolt by just force tightening it. This should work for everyone, but if it doesn't let me know and I can release an un-threaded version sized for cutting the thread with an M3 bolt.

I recommend printing in PETG for layer adhesion, but this may work with PLA as well.
Your biggest concern will be with over tightening and torquing the threads out! Just don't wrench on them, they behave similar to a nylock nut