Sorry development got delayed. The remodel is going into high gear and I haven’t had as much time to Maslow as I’d like.
The new dust chute was a test of my modeling skills. I wanted to establish this section down the chute:
Which gives us a section 46.488 mm (1.82 in) by 76.2 mm (3 in).
A = (1.82 x 3) * 28
A = 5.49 * 28
A = 153.74 CFM
I would have liked to get 190 CFM, but I was hitting the limits of the clearances I have under the router. It does provide enough flow for a 2 1/2" hose (140 CFM). I added a round opening at the bottom to fit that size hose.
And then added all the additional features to mount it to the sled and mate it with the hood body.
I’m going on vacation to Italy tonight, however, and will be a little too distracted to make any more progress. The Fusion 360 model is available, so if anyone wants to dig in and make their own nests and prep the stl files, feel free!
Arrivederci!