Ultimate Bosch PEX 400 adapter base

There are some very nice adapters out there for the Bosch PEX 400 orbital sander. However, I was concerned if those would not drop off too easily. So I created a base-part with a rotational locking mechanism which holds very tight.

You'll find a base-model to model your own duct (STEP file included) as well as a fitting for a tapered 32mm and 36mm hose.