Just a quick remodel of RODAM Ender 3 Spool Holder - Fat Mod by goehler to fit the Snapmaker J1s and also a remodel of RODAM Ender 3 Spool Holder - Fat Mod - Reel Adapter for Hollow spools by Ed RetroTech so that it fits this mod. I made a slightly longer one too for those reels that are a little wider than the origonal J1s reel holders.
The AntiSpin Dowel i printed in TPU flex so insertion and removal of the bearings is much more pleasant, The holder and adapter in PLA although PETG would probably have been better for the last two.