I printed stock settings in bambuslicer with .4 nozzle, at .2 layer height, using iiidmax pla+. The part of adapter that goes into festool inlet needs a layer of tape to act as a gasket, otherwise it will be loose. I figured a tape gasket would be a better seal than two plastic layers making contact, plus for my use it is semi-permanent.
this was made using https://www.printables.com/model/282014-parametric-vacuum-hose-connector-with-magnetic-con/files
The author remixed this model.