Micron3dp

http://www.micron3dp.com/
http://www.ebay.com/itm/MICRON-3DP-ALL-METAL-1-75-MM-J-HEAD-EXTRUDER-COMBO-/181428780260?pt=LH_DefaultDomain_0&hash=item2a3dff7ce4 MICRON 3DP

http://www.filamentfactory.co.za/collections/all

The main advantages of Micron's hot end

Patent pending "All metal" hot end featured a detachable filament guide and nozzle module "DFGNM"

"All metal design" enables working with Polycarbonate up to 300 degrees Celsius and with future materials that require higher working temperatures beyond those supported by plastic extruders and hot end.

Tested with PLA, ABS, polycarbonate, nylon and HIPS.