Remixed this really great design of this Festool adapter that twist and locks into place just like any native Festool product. I've added a reducer so that it expands to a 2.25" outer diameter so that I can use my old RIGID vacuum attachments prior to having upgraded to a Festool CT26.
The really great part about this design that I like is that it clicks into the festool hose really well.
I have included the Fusion 360 file in the project as well just in case you would like to remix it yourself to something else :)
The author remixed this model.