Filament spool holder for Zeni Kinetic spool and MOST Delta. Requires a 5/16" x 3.5" carriage bolt ~$0.49 USD, 5/16" nylon lock nut and a 5/16" x 1.75" fender washer ~$0.31 USD to make.
Print spool base and thread in carriage bolt. Print spool insert then attach spool base to top of MOST Delta printer. Put spool on threaded rod. Then washer and stop not after spool insert.