Cenjpas

This looks really good. Just got my hands on a Ultimaker 2+, and was given a pile of different brands of spools so I was looking for something like this. The inset wheel is awesome. I was hoping you would make the printable file available, however I was thinking I could use two skateboard bearings (of good quality), to make the rotation even smother by placing them at the side of the shaft. Worth it or just overkill? - or maybe just for heavier spools?