I wanted to see what I could do to quiet this setup. Using some scrap 1/2″ OSB and Styrofoam I built a box and cut some holes for the 1-14″ hose I found at Home Depot.
Unfortunately the Styrofoam doesn’t do a very good job of reducing the sound. Only a 10db drop when it was done. I’ll be looking for better sound reduction material. 
A lid slapped together from MDF scraps. I may add a baffle to the lid later and route the exhaust out through it later. 
The hose on the front side blows, the back side sux.
I hope to get a “hood” built for the backside that will suck in the dust. The mount for the blowing attachment is temporary. I think the permanent one will be mounted on the dust vac box. Probably some kind of articulating arm. I’m still working on the design for that.
$10 worth for the 4-gang box, 2 -switches, 2- outlets, and an hour or two later I had two switched outlets, one for the vac, the other for the CNC. I’ll mount it farther away from the CNC later. I don’t want to have to reach across the CNC machine to do an emergency stop of the machine.
Note: I realized long after creating this post that I never discussed the vacuum I was using.
Well here is a separate post about it.