YAMS - Yet another master spool

The filament spool bought from probably Prusa is possible to take apart.
I printed a smaller and shorter inner tube to fit the 800g refill filament from AddNorth.se plus a 50mm bolt/nut to keep things in place.

Works For Me(tm)
The rolls from Addnort is 50mm wide and seems to be 102mm inside diameter if I remember it correct.

I use 0.8mm nozzle and PETG
0.5mm layer height in general and 0.2mm for the threads (Slic3er, variable layer height)