Summary The design came to me as an option to put the loose filament on an existing, still being used, spool of filament. It was designed using a MeltInk spool but may fit others. I will add other designs as I modify it to fit other spools. Print Settings Printer: Hictop Rafts: No Supports: No Resolution: 0.2mm Infill: 20% Notes: Supports are unnecessary unless you have trouble with bridges. The bridges are about 12mm in length.