Kärcher 180degree adapter for Festool track saw

Hi!

I was tired of my bumpy Kärcher hose getting stuck on either the track itself, or on the material being cut.

I figured it would be  better to have the vacuum hose in an arc in front of the cut, rather than dragging it from behing over the sharp edges.

My vacuum is a wet/dry Kärher WD6P Premium, but I think the suction hose is similar on many models, so check the pictures for reference.

Last photo is the adapter I've been using until now, and the whole assembly is bulky and stiff, and often ends up breaking loose from the Festool rotating ring nut.

The Festool adapter must be removed from the saw to fit this. 
I needed to do it that way, in order to keep the part strong enough to handle use. I was careful and designed it in a way that it still fits inside the systainer without the need to remove it.
The divider rib inside is also to add rigidity, I don't expect it to impeed the dust passing by.

I printed it with PETG, 25% infill, and 4 perimeters, 4 bottom, 4 top layers.

That was my choice for estimated strength, and it seems good, but havent been tested over time.
I used support enforcerers to only add supports in the open holes for the Kärcher locking mechanism. 
Also added a flat on the bottom, to easier place the part on the printbed and avoid supports.
It may not be the prettiest design, but it is a technical part, so I don't care.

Included both 3MF and STL files, as I have heard before that some don't like the 3MF files from my Prusa Slicer.