This is an external spool holder for the Flux 3D Delta printer. In addition to the printable parts it also requires 8 countersunk M5 x 12mm nuts and bolts and about 130 1/4 inch slingshot pellets. Sorry about the nuts and bolts. I was learning throughout the process and only figured out how to print reliable bolts after I'd designed the ball bearing base. I will update the design later to remove the need for the metal bolts.
The 50mm spool insert was made with Tinkercad. If you need a different diameter, you should be able to edit it here: https://www.tinkercad.com/things/lw1ThEE3nGE
The spool insert simply screws into the spool lifter and can be replaced as needed.
Only screws should be printed with rafts.