A new one piece water cooled hot end called the OPAM has just launched on crowdfunding website Indiegogo. The OPAM (One Piece All Metal) hot end can printing using temperatures as high as 350°C and has been fully tested with multiple materials, including PLA, ABS and PC-ABS. You can find out more over on 3DPrint.com: http://3dprint.com/63040/opam-water-cooled-hot-end/


Below is a photo of the OPAM hot end: