参数化J型头部喷嘴夹持器

Parametric J-Head Nozzle Holder / Nozzle Adapter

2024-03-30 17:56:09

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Summary

Parametric J-Head Nozzle Holder / Nozzle Adapter.

All my 3D printers still use the old Greg/Wade extruder with the reprap J-Head NozzleHolder and Nozzle.

Since I could not source replacement parts for these old nozzleholders and nozzles anymore, I decided to design/machine my own version of this system:

increased heater block size
added M3 grub screw to lock the heater cartridge to the nozzle adapter
support E3D V6 Nozzle type

Recommended materials:

nozzle holder: peek
nozzle adapter: brass

Following nozzle holder types are generated, which only differ in the thread on the cold side of the nozzle holder:

NozzleHolder_M8x1.00.stl
NozzleHolder_M8x1.25.stl
NozzleHolder_imperial.stl

on the hot side of the nozzle holder, I still use the imperial thread 5/16 x 24, so that the old original nozzles still can be used

Remarks:

For easy machining of the nozzle adapter in my lathe, I did create "ExcentricTurningArbor3DPrinted.stl", which can be spanned into the ER40 32 mm collet
Of course this machining can also be done in a 4-yaw chuck on the lathe or with a boringhead on the milling machine. (the first nozzle adapter I did machine fully on the milling machine).
The hollow M8x4.6 (1.25) grub screws I machined out of grub screws M8x10 (1.25) since I could not resource these hollow grub screws
when using nozzles with diameter 0.8 or 1.0 mm, I use a 50 Watt ceramic heater cartridge; when using the smaller nozzle sizes 0.3 or 0.5, I use the original ceramic heater cartridges