Adapter a Fein vacuum to a Makita LXT Router. Probably works with festool vac too. Probably works with other Makita trim routers too. All probably :)
The Fusion 360 file included has a parameter "wall" which is 2mm in this print/model, but can be adjusted by just changing the parameter for your needs.
Probably not stable enough to be used on an edge, the vac is pretty heavy (though I often hang the hose from the ceiling), but works well on flat surfaces.
Both nozzles are slightly tapered to match their respective ends and makes for a quite tight fit.
The pictured one was printed in resin, but this should print totally fine just sitting on the bed in FDM, no supports etc required.
The author hasn't provided the model origin yet.