simple filament colorizer.
thingiverse
simply place a piece of foam inside the two halves, and tie them together with some zip-ties, then feed your filament through and voila, colored filament!
Download Model from thingiverse
With this file you will be able to print simple filament colorizer. 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 simple filament colorizer..