Prusa Core One internal spool holder

If you don't have enough space next to your printer to change filament, like me, this is the solution and will allow you to put another printer right next to it without the need for a gap between them to insert filament. 

There is no need for any additional fasteners, just the one you remove from the printer when removing the side. You will also use the same spoolholder.

I put a longer Teflon tube in it but it's not a requirement.