This hose adapter will fit the Makita track saw very snug (will not swivel when the saw is reassembled), and will accept the O-Ring from the original dust port on the saw. The saw will even fit back in its original case after this is installed!
The print is a little tricky, I printed with the large side down and definitely used supports on the underside of the small side. Mine came out a little rough with the minimal supports I used so I would paint on a little more than the auto-generated “overhang only” ones.
Included the f3d file if anyone wants to remix to smooth the interior of the adapter.
The author marked this model as their own original creation.