Friend asked to print this, printed 5 pcs. from PET-G

It is nice but is very unstable. If you bump the printer the spool will fall. You could add some extensions to fit in the spool holes...
@akamaka I added a lip to one of the models to keep it more secure, named with guard ;)
Have you tested it with other spools? for example the 250g from eryone or even the 850g Prusament ASA hace different diameters.
Fits nice on the 6R series thank you