The separator is built from a container (trash can), a baffle, and some plumbing parts. I used my router and a circle cutting jig to create the lid from a sheet of 3/4 birch plywood. Next a jig saw was used to cut the holes, the center port goes to the collector and is a 3" schedule 40 pvc pipe connector. The inflow is a 3" schedule 40 street elbow. Both were a snug fit but were sealed with silicon caulk.
The underside of the lid has a rabbet that is sized to create a snug fit on the trash can.
|Here you can see the elbow|
The baffle inside the separator creates a trough for the debris to be able to fall down into. The separator acts as a cyclone to remove the debris from the air. Once again I used the router to cut both circles.
|The inside radii is 1.25" smaller than the outside radii|
|This is a piece of apple I was using for a test. The router left some small ridges but those would come off with a small amount of hand plane work.|