So far the only model I've tested on is the 1000HD, but it should work for most models as they use the same profile.
The interior is slightly undersized so it's first a good idea to insert the hex key while twisting to knock down the interior corners and get a snug fit that's still easy to remove. The exterior is slightly oversized, so it takes a few taps with a soft mallet to get seated properly.
Printed with a 0.3mm layer height and 10% infill. My print took ≈40 minutes
The author hasn't provided the model origin yet.