I have bought a Makita battery powered vacuum since I already had the batteries. Since I have a lot of Vorwerk accessories I needed an adapter but none of the available ones would fit. Therefore I combined the models by parkis and RadOncTinker.
The pipe section width is exactly 32mm and fits the Makita vacuum perfectly. The other side fits the old (only the old) Vorwerk accessories.
This is a remix of these two things:
https://www.thingiverse.com/thing:3412979
https://www.thingiverse.com/thing:3455069
Print with a brim to enshure that it sticks. Print with the Vorwerk side on the printbed to maximize surface area.
The author hasn't provided the model origin yet.