Description
The J-head V5 Hotend is a 3D printer component that has a 1.75mm/0.4mm nozzle and uses the Bowden principle. This allows for faster printing by reducing the moving mass of the extruder and minimizing shaking and energy use. The Bowden cable guides the filament into the hot end, which is connected to the extruder. This concept was pioneered by Ed Sells and has been tested with various materials. The J-head is assembled with a 100K NTC thermistor and a cartridge heater, not a heat resistor, and operates at 12V with 40w of power.
1.75mm/ 0.4mm
The Bowden principle
1. The Bowden cable lets you reduce the moving mass of the extruder and thus allowing faster controlled motion, less shaking of your machine, less energy use
2. 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.
4. 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.
5. The concept of using a Bowden cable as guide was suggested and pioneered by Ed Sells.
6. Tested with PLA, ABS, polycarbonate, nylon and PVA.
7. The J-head is assembled with 100K NTC thermistor and Cartridge heater,NOT heat resistor.Check the following specifications for the assembled heater.
Voltage: 12V
Power: 40w
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