Filament Spool Reel

The stock spool holders on the printers I have used have at times caused tension on the filament and caused failed prints. The Raise3D printer uses tubes that tend to add resistance to some filaments- particularly polyflex and e-Sun. These reels fit inside the spools and allow us to mount the spools on 1/2" pvc mounted overhead. These turn with very little resistance. A slight spring allows the outer portions to squeeze inside the spool and spring back to hold it in place without continued bending in the plastic.

See https://www.thingiverse.com/thing:4414885 for the overhead PVC mount.