Thats the way I do it. If someone wants the stls Ill upload em. Maybe ^^
or there’s this http://www.thingiverse.com/thing:21435 which will fit different widths of spools (not my thing)
@Steve_M yes of course there are some stls online but on some the spool rolls off of it 
Thought that was how you were doing it. I may copy it if I come to needing a 2kg spool again. 
@Ax_Smith-Laffin of course you can 

