Reply by Cosmicsniper

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Posted on Dust collection host/duct/connection questions

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2202 posts in 3128 days

#1 posted 10-08-2011 04:21 PM

I think that more important than a single 6” port on the table saw is the ability to bring a second, smaller port at the blade guard itself. Most of the dust that concerns me on the table saw is the stuff that flies up…and even a 6” port might not capture that.

The ideal is 6” however. But in the case of a machine with only a 4” port, you will still see a benefit to keeping your main at 6” since it will improve overall static pressure. From there, you can determine the drop to each machine…and those ports you can’t easily alter you can decide, at that point, to use 4”.

If you run 4” straight from the DC, you lose the opportunity to do 6” at some machines. And make no mistake, the math shows that you won’t capture all the fine dust at 4”. At that point, it is up to the user to decide how much dust is too much. An efficient system at 4” coupled with secondary air purifier/filter might be just fine for you. It’s certainly a highly individual thing…some people are more affected than others. People can work in coal mines, do wood working, and eat nothing but bacon all their lives and still live comfortably to 100. Others might dig an early grave.

I’d run a 6” main with a 4” drop to the TS and then make the decision from there whether it’s good enough.

-- jay,

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