Summary Bought the push plastics sample pack. The diameter was larger than a normal spool and I didn't want the ends getting free so used an old .5 kg monoprice spool to hold them. I would consider this a quick and dirty job, it's better than nothing but needs improvement. Use at your own risk. Place all the 'combs' near each other on the spool, drape the filament on them and then slide apart. As I use this sideways spool holder (https://www.thingiverse.com/thing:508896) I needed the spacer to have it fit. I also had issue with the filament catching when using the top two levels so I have to flip it over and rearrange the holder to make sure I'm printing from the middle or bottom layers. Print Settings Printer: Monoprice Maker Select v2.1 Rafts: No Supports: No