Updated print profiles, the Filament hole was missing.
I added some holes in the sides to make it a) a bit lighter and b) you can see the filament.
I added also a 2mm hole in the middle, that you can add other filament for respooling.
I print this usually with a 0.6 Nozzle, 0.4 for sure works also perfect.
Enjoy!
Works also with the Multi Filament Spools from giuliolibrando