Mini J Head Nozzle
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Mini J-Head Nozzle
Release status: Concept
Description | Mini J-Head Nozzle, Thermal Barrier, and Mounting Plate based on the J Head Nozzle.
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License | GPL
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Contents
Introduction
Advantages
- Internally, the filament path is identical to that of an already proven design.
- If necessary, the PTFE liner can be replaced by using an off-the-shelf piece of PTFE tubing.
- A resistor is used as a heater. There is no need to wrap nichrome wire.
- Heat transmission is improved as there is no thermal junction where a separate heater screws onto the nozzle.
Disadvantages
- The brass nozzle requires considerable machining.
Parts List
Quantity | Part | Description |
1 | Brass Mini J-Head Nozzle | Machined Brass Nozzle/Heater Combination |
1 | PEEK Insulator | Machined PEEK Insulator |
1 | PEEK Support Plate Insulator | |
1 | Metal Support Plate | |
1 | Heater Resistor | Axial, 5.6 ohm, 1%, 5W (UB5C-5.6-ND) |
1 | Thermistor | 100K (B57560G104F) |
Machined Parts
Mini J-Head Nozzle
Material: Brass Bar Stock, 5/8" Square Or 5/8" x 1/2" Rectangular, ? Long
Note: The machining process can vary depending upon available machinery and tooling. The minimum machining requirements are a metal lathe with a 4-jaw independent chuck.
Thermal Barrier
Material: PEEK, 8mm Round
PTFE Liner
Material: PTFE tubing, 4mm OD, 2mm ID
- Cut an approximately 30 degree (or greater) taper on what will be the hot-end of the PTFE liner.
Assembly
Notes
General
Testing
Future Modifications
Pictures
See also: Extruder Nozzle Variations