
I used a 4 x 4mm hole in my model (Ender 3 Pro and PLA) and it works great as my printer prints holes that are a little smaller than most. The testbed works are planning to use it in the last case I'm building for my cyberdeck and also looking into the m3 kit as I have some modular panels in my case it would be nice to have a permanent thread. It would also be great to see refill kits like the 100 for $10, I would buy them all the time especially if they were longer too.