This is an alternative attempt to free the engineering marvel that 3D Systems created and soon dumped for obvious reasons. Reliability being a big one!
Adaptation to 4mm Bowden tubes created a small demand for cartridge replacement hubs. There are 3 solutions I know of today that will provide the Bowden tube adaptation. These are well covered at the Print3DForum. You will also find a hub in my Thingiverse creations.
Considering the level of effort required to modify stock 3DS hot-ends, an earlier version of this nozzle was released on the print3dforum. Having proven that a printed part will not simply melt in the extruder assembly, I thought I'd give this a try.
Feel free to provide comment about your experience with this nozzle, pro or con.
This build requires a PC4-M5 push-to-connect fitting. I use a very generic version of the fitting.
I have removed the older version in favor of the current download (V1). I also included a set of two parts in a Cube3 ABS print file that utilizes the left side cartridge. The images may not be fully up to date but the parts certainly are.
edited: April 14th, 2019.
Any PLA or ABS
The small tube should slip freely inside the housing. Note the comments on the images; there is a preferred orientation to account for where the printer starts and stops each layer.
The M5 thread should be ready to use. Be sure not to cross-thread the part.