J Head Nozzle

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J-Head Nozzle

Release status: working

Jhn mk5.jpg
Description J-Head Nozzle and Thermal Barrier Based on a combination of ideas from the Makerbot Mk 5 hot end, The Inline Heater Variation, some ideas from Brian Briggs, and some ideas from me.
License GPL
Author Reifsnyderb
Contributors
Based-on Extruder Nozzle Variations
Categories Hot End, Extruders
CAD Models none
External Link Blog


Contents

Introduction

J-head Mk V-BV's are still available at http://www.hotends.com


NOTE: All Research and Development on J-Head Hot-ends has stopped due to the availability of cheap chinese counterfeits that have been spammed throughout the online markets, don't work well, and have no support.


Jhn nozzles.jpg

Suppliers


Differences Between Real J-Heads and Cheap Clones


clones - removed see discussion page

Parts List

Mk I

Summary: First J-Head hot-end.

Jhn mk1.jpg

Mk II

Summary: Added a hollow set-screw to retain the PTFE liner.

Jhn mk2.jpg

Mk III

Summary: Added a heat sink in order to print PLA. To reduce weight, an aluminum nozzle is used.

Jhn mk3.jpg

Mk III-B

Summary: Added a heat sink in order to print PLA.

Jhn mk3 b pic.jpg

Mk IV

Summary: Removed the heat sink and added a series of vents to provide cooling. To reduce weight, an aluminum nozzle is used.

Jhn mk4.jpg

Mk IV-B

Summary: Removed the heat sink and added a series of vents to provide cooling.

Jhn mk4 b.jpg

Mk V

Summary: Reduced the size and increased the length of the melt zone. To reduce weight, an aluminum nozzle is used.

Jhn mk5.jpg

Mk V-B

Summary: Reduced the size and increased the length of the melt zone.

Jhn mk5b.jpg

Mk V-BV

Summary: As the old thermistor was discontinued, the Semitec thermistor was substituted.

Jhn mk5bv.jpg

Mk VI-B

Not released due to cheap chinese counterfeits of J-head hot-ends. The innovation and production of new J-Head MK VI-B hot-ends has stopped due to chinese counterfeits that do not follow the specifications and have ruined the reputation of the product.

Mk 7-B

Not released due to cheap chinese counterfeits of J-head hot-ends. The innovation and production of new J-Head Mk 7-B hot-ends has stopped due to chinese counterfeits that do not follow the specifications and have ruined the reputation of the product.

Mk 8

No Longer Available

Summary: Improved J-head with a better internal seal, axial thermistor, heater cartridge, and a fluted PEEK nozzle holder design. No kapton tape is required.

This design will not be publically released due to cheap chinese counterfeits of J-head hot-ends. The innovation and production of new J-Head Mk 8 hot-ends has stopped due to chinese counterfeits that do not follow the specifications and have ruined the reputation of the product.

Mk 9

Not Available

Summary: J-Head Mk 8 with a built-in Push-To-Connect fitting for bowden extruders. A hollow set-screw is still in place to adjust the PTFE liner tension. No blueprints will be released.

This design will not be publically released due to cheap chinese counterfeits of J-head hot-ends. The innovation and production of new J-Head MK 9 hot-ends has stopped due to chinese counterfeits that do not follow the specifications and have ruined the reputation of the product.