Geeetech All-metal Short-distance J-head Hot End Hotend for PLA ABS - 3d Printer Extruder PTFE & Nozzle Size Optional (For 1.75mm filament with 0.4mm Nozzle)

Description:
This all-metal J-Head Hot End has faster controlled motion, less shaking of your machine, less energy use and importantly: faster printing! Normally the mechanism that drives the filament into the hot end (where it melts) is directly on top of the extruder. This creates problems of balance and oscillations with faster motion which you can see in your printing results and hear and feel when your machine is shaking.

If the filament drive mechanism is placed on a non-moving part of the 3D printer, it can be pushed into a tube. PTFE (Teflon) is useful because it is slippery: it has little friction with the plastic.This limits wear and loss of energy. The tube's other end is connected to the extruder's hot-end.

Advantages:
All metal 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.
The inner diameter of the bowden feed mouth is 4mm to print with 1.75mm filament,and 6mm to print with 3mm filament.
This short-distance J-Head hot end must assembled with extruder together.

Package List:
1 x All-metal short-distance J-Head Hot End

Note:The PTFE and Nozzle size is optional.
PTFE Size For filament: 1.75mm filament, 3mm Filament.
Nozzle Size: 0.3mm Nozzle, 0.4mm Nozzle, 0.5 Nozzle.