universalmasterspool

thingiverse

In my opinion, the biggest problem with the Masterspool is that different manufacturers create their own standards for it, even when two use the same norm, and being just a mm or two off can result in too much slack and filament tangling. This means you either buy only one brand of filament or have multiple masterspools printed for every brand you purchase. Using three M6 machine screws as the hub allows the Masterspool to work with every size of refill out there, saving a lot of filament and print time. I've also cut one out of cardboard and it worked, even more efficiently than before. The outer diameter makes maximum use of my i3 Mega printbed while the inner diameter just fits the default spool holder. I've included the .scad file so feel free to remix it for your printer setup; you can also change the screw thickness or whatever you want. For assembly, you'll need: * Both halves (except for the nametag, they're identical) * Three M6 machine screws that are 80 mm long * Six hex nuts * Three wing nuts Pictures should explain the assembly well enough. This is my first upload and I'd appreciate productive input; especially about my use of OpenSCAD. If you know a better or more elegant way to accomplish the same design, please let me know.