* http://3dprint.com/3340/ulimate-filament-colorer/ using Sharpies for color filament
* http://hackaday.com/2014/05/06/hands-on-with-the-flexydualie-3d-printer-extruder/
* [http://nicklievendag.com/filament-guide/ Filament selection guide, including exotic filaments]
== See also ==
* [[Plastic_recycling]]
* [[PrintrbotSimple]]