I was having some issues with my 3D printer so it took me a while to get this done. But here it is, a front mount dust boot for the OneFinity with a spindle and a 4" dust hose.
I added a flip-up hammer lock to keep the dust boot in place and used the same magnet and pilot ring to connect the 4" hose. I’m thinking I will print a second dust boot and install a longer brush so I’ll have a long and short brush for different needs. The support arm geometry had to change since the centerline of the spindle is further away from the Z-slider main plate. I also tweaked the geometry of the air duct to hopefully improve the already wonderful airflow.