AMS riser spool holder feeder Accessory

Spool holder and feeder for the Top Glass and AMS Riser by C3Dyou can ether find barings to print or get them from amazon these are the one I got Bearings Double Rubber Sealed Shielded Miniature Deep Groove Bearings 8mm x 22mm x7mmI loved the Riser the C3D designed and wanted to include a way to use my external spool .. so I designed these to work with that riser.