This is a dust/ debri collector I made based of of the plans here: http://www.cgallery.com/jpthien/cy.htm
I was a bit skeptical at first about this, but I can say now that it works perfectly. Almost zero dust or debris gets to my shop vac, and I see no real loss of suction. I have seen others make these before, and so I learned a lot before I ever started on mine. I added a gasket around the outer rim of mine to decrease any potential loss of suction. I also tried to follow the plans as close as I could to get the desired result. I also made a little cart to move the set up around the shop. I’m open for any questions. Thanks for looking!