Hey Jim,
I would think that in any case the v9 is better than the v8. But also think it will not compare to the v7. But I also think that a 70 mm hose would be enough for the Onefinity, provided you don’t use a workshop vacuum but a dust collector and that you have something like the v7 for 70 mm hose. I have a pocket thicknesser that also has 70 mm output and it produces many more chips than the Onefinity ever will.
Hope someone (with a serious dust collection system) will test the v9 soon and report.
Have you ever thought of putting the camera inside the dust boot?
Daniel @PwnCNC, the v9 product page says the opening is 66 mm wide, but how high is it at the smallest point?
How To Assemble Your V9 Dust Boot
The height is needed so I can calculate the opening cross-section area.