Dust Collection - Best Way From Here To There...

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Forum topic by Adamal posted 07-03-2014 02:17 PM 858 views 0 times favorited 2 replies Add to Favorites Watch
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58 posts in 2024 days

07-03-2014 02:17 PM

Hey all!

I’ve got a HF dust collector with a Thien separator (all 5” fittings) and a Wynn .5 micron filter. From there, I’m going about 15’ across the ceiling with 5” metal snap-together duct. What I’m trying to figure out is, what’s the best way to get it to my table saw?

I was going to come down the pole with more 5” metal to a blast gate and then adapt to 4” flex for the 10’ into my table saw. I was originally going to go 5” all the way to the saw, but it seems everyone is using 4” – plus, I’d eventually like to get a 2-1/2” hose above the blade and with 4” below, I’d still have enough draw above.

Will the 5” metal fit on to a 5” blast gate? How would you adapt to 4”?

Here’s a pic to show you what I mean:

Any suggestions would greatly appreciated.


2 replies so far

View bigblockyeti's profile


5137 posts in 1744 days

#1 posted 07-03-2014 02:47 PM

I would put a 5” to 4” reducer right on the back of the 5” blast gate and run the rest in 4” pipe to within a couple feet of the floor, then use 4” hose to the saw. You could at some point in the future add a wye for the 2.5” hose for the overarm dust collection. If you’re worried about the draw for the overarm, you could add a 4” blast gate before the hose to throttle the cabinet collection to get what you need to catch all the dust from above.

View mbs's profile


1656 posts in 2963 days

#2 posted 07-03-2014 07:04 PM

stay with the 5” as long as possible because there is a lot less friction in 5” than 4” which will improve the air flow.

-- Sorry the reply is so long. I didn't have time to write a short reply.

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