Charlie Lenz
The biggest problem with dust collection on Contractor's style table saws is what the industry has provided, the generic plastic shallow trayed dust hood under the saw, it's very inefficient. I know that alot of people worry about the backside of the saw being open, but with a good dust hood and dust collector you'd be suprised what little bit of dust actually makes it's way out of the cabinet. Here is a guy that built my dust hood out of wood and demonstrates how well it works. http://www.youtube.com/watch?v=MkzY0F-5YlI