Cartridge
thingiverse
This seemed like a simple thing to practice 3d modeling. I use them to burn off the end of a spool of filament. After I get enough I offer them up on the MMCC forum for the cost of shipping. It reduces waste, prevents clutter in my home, and makes cosplayers happy.
Download Model from thingiverse
With this file you will be able to print Cartridge with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Cartridge.