I hate rewinding the filament rolls so I made two modifications on two great designs to fit them on the spool as they arrive, without rewinding. I used KillerGardevoir's arms and extended his hub design to fit on mgg942's mount. I also created a wider hook to fit the widest filament pack I have ever bought.I printed them with 0.1mm layer height, no support, 35% infill (just to make sure they will stand for a long time).