???? Re Dust Control On Contractor's Saw

Has anyone seen Sandor Nagasanczcy's (sp?) new book on dust control?

He shows a shop-built "thing" that looks like a HVAC return under the blade inside the body of a CS with a 4" outlet. The idea is the flying dust should get hurled into the HVAC "thing" and then sucked out through the hose.

It seems like a great idea. Obviously, I'd need to remove it for tilted-blade cuts, but they're a minority of my cuts anyway.

Does anyone have any thoughts or opinions? Thank you. Howard:confused: :confused: