There are two versions available, one that has the ¼"-20 Thread modeled in and one that fits a hot melt brass insert. I am using ones that are 9mm long.

The stream deck is hold in place using invisible magnets, it fits 12 6x3mm magnets like these

[https://www.magnet-shop.net/neodym/scheibenmagnete/scheibenmagnet-6.0-x-3.0-mm-n45-nickel-haelt-900-g](https://www.magnet-shop.net/neodym/scheibenmagnete/scheibenmagnet-6.0-x-3.0-mm-n45-nickel-haelt-900-g)

For this to work, you need to add a filament change on your prusa on the right layer (or a print pause, but it seems buggy, because the hot end does not heat after the pause..) and put the magnets in before printing the “lids”