I wanted a spool holder that fit on top of my printer and was quick to replace the spools to replace the one that came with my printer that was too finicky to use properly. After looking around on Thingiverse, I could not find any that fit my printer or would not interfere with other items around my printer. So I designed my own. Here is the result. A completely 3D printed spool holder that fits on the corner of my printer.