A nifty tool for snapping off the perfect size of a pin header. Can snap off headers of size 2, 3, 4, 5, 6, 8, 10, and 12. For 12 you need to block the other side with your finger.

Use seven M2.5 nuts and seven M2.5x6 screws to assemble.

The floating M2.5 nut holes are designed in such a way that you can print them without supports as long as you use 0.15mm or smaller layer height.

See it in action here: https://twitter.com/arturo182/status/1401548762128945157