Missing Knobs?

[Emporio]

Hi,

I don't know if anyone else has suffered the same problem of the rotary knobs becoming loose?  When gigging I have lost a few so I decided to make some new ones on my 3d printer.
Attached are the STL files I used.  I originally re-created the original knobs, but afterwards I decided to remodel them.  I prefer the upgraded design to the original and have now replaced the lot!

I used ninja-flex filament (or similar) to make them.

Ant

[retroip]

Hi Emporio,
Mine are fine, I'v tried to have a look on some stamp (manufactured date), but nothing found. I bought my keyboard almost 1 month ago, and I had focus on trying how are these knobs and sliders cover holding. Mine seems very fixed.