I really liked the idea of Mobiobi's hub so redesigned it to use less filament and, I think, look a touch sharper.

I have had issues when some of my Prusament rolls haven't fit well in my AMS - oddly it seems to be relatively random - some fit and others do not as they are too wide - so I have spent a fair bit of time printing out the Bambu Lab spools. At the same time I was unhappy throwing out the Prusament spools as they are so well made. This little gizmo allows you to reuse your old Prusament spool sides with a new push fit core that you can reload and use in your AMS.

I have included some small angled holes to help with getting the filament to stay put when you start rolling the new filament on - just tuck the end of the filament in and start rolling. 

I use this filament winder: https://cults3d.com/en/3d-model/tool/enrouleur-de-filament

I have just printed it in PLA at 100% infill and it works great!