The nozzle of my Numatic Hetty had a tear in it and was on its way to become unusable. I couldn't find a replacement part on Thingiverse, and Numatic only sells the whole hose.
I designed this replacement part and it is a drop in replacement.
Fusion 360 archive included to allow for further tinkering.
Update 2021-04-04: Uploaded a new version. The old version had a 0.5mm ring inside, but a tear/crack forms over time. The new has a 0.25mm ring, which suffices.
Printer:
Creality CR-6 SE
Rafts:
No
Yes
Resolution:
0.2
20%
Notes:
Print with 3 or 4 walls for optimum strength. Consider turning cooling down to increase layer adhesion. I used zigzag infill pattern.
Replacement
Using the end of a tea spoon you can push the locking tabs down and remove the existing nozzle. After this you can press the newly printed nozzle onto the hose.
The author marked this model as their own original creation. Imported from Thingiverse.