open-source-energy.org

 Not suggesting that we go and buy one, just showing that it is possible to print other type plastics.:D

http://www.ebay.com.hk/itm/Prusa-Nozzle-for-3mm-filament-0-4mm-made-in-CZ-by-Josef-Prusa-/360791855393?ssPageName=ADME:B:FSEL:HK:1123