When I first bought the table saw, I desperately needed some dust collection to combat with fine sawdust it was outputting. I went to my local Rockler store and picked up a 4″ to 2-1/2″ reducer, and a 2-1/2″ to 1-1/2″ reducer to connect my table saw dust collection port to the old hose. This setup did extract quite a lot of sawdust but I can still see some on the table. In this video, I did some test cuts after replacing the old hose with a proper 2-1/2″ dust collection hose. The test was not scientific at all but I did notice there are less sawdust sitting on the table saw table after the cut.
If you are interested in buying the tools that I used in the video, check out the links below(Amazon affiliate links). It won’t increase the cost to you, but your purchase will help me grow the website. So thank you!
Tingzhi(Vince) Li 
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