Bosch Food Processor - Coupling for Multi-level Knife

So finally the plastic coupling mounted on the Multi-level knife for our food processor (Bosch MultiTalent3) broke apart during breakfast-smoothie making, causing half the contents to leak out on the countertop :(

After contact with Bosch support they told me to go back and make a claim at the store that I purchased it from. But since the store is about 300km away I thought: "Hey maybe this can be 3D-printed? And make it more durable while I'm at it"!

Said and done.
Works like a charm!

Note: The threads on the square M5 nut is COUNTER-clockwise.

EDIT: a few years later the lower plastic coupling for the motor broke, pic.4, (PETG coupling that i printed has held up nicely though) so I made a custom one and added the joining coupling in files list for everyone who might need it...