All Metal J-head Hotend for 1.75mm Filament Bowden Extruder Reprap 3D Printer

The Bowden principle

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 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.

The concept of using a Bowden cable as guide was suggested and pioneered by Ed Sells.

The main 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.

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

The J-head is assembled with 100K NTC thermistor and Cartridge heater,NOT heat resistor.Check the following specifications for
the assembled heater.
Materail: Stainless Steel,PVC,Nylon
Voltage: 12V
Power: 40w
Wire Length :1m
Heater size: 6 x 15mm(D*L)
PTFE tubing
Length:1 meter
Package List
1 x All Metal J-head Hotend for 1.75mm Filament Bowden Extruder Reprap 3D Printer
Bowden feed已改


We accept PayPal only.

1.Items are shipped from china.we will send out within 1 bussiness day after receive the payment.


2.We only ship to ebay confirmed address. So before bidding,  please kindly verify your ebay address.


3.Shipping to UK takes 8-20 days in normal condition by bpost.

Shipping to most other countries takes about 12-30 days via Economy Int'l Airmail.

Less than £40, without tracking number,if you request tracking number,please pay £3 more and let me know.

Over £40,with tracking number free.The shipping time depends on your location and local postal service,as well as the     weather condition along the shipping,sometimes may take longer,.please contact us to confirm before leave feedback or open case.


4.Express shipping: Extra £15 --£20 will be charged for the first 500 grams for most countries. Contact us if  you need this service.

1.If you are not satisfied when you receive your item, please return it within 30 days for a replacement or money back.   Please contact us before you return it.
2.If item is defective in 30 days, We will send you a replacement without extra charger, or offer refund after we receive the defective item.


3.If item is defective after 30 days, you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping fee.


We are honest seller and do our best to serve you.

So if you have any concerns,please don’t hesitate to contact us by ebay message.

We will do your best to help you out.please don’t leave negative/ neutral feedback or open case before contact us.