Blast gate locations

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Forum topic by widdle posted 02-04-2011 10:23 PM 1139 views 0 times favorited 5 replies Add to Favorites Watch
View widdle's profile


2069 posts in 3268 days

02-04-2011 10:23 PM

Topic tags/keywords: dust collection

New to dust collection here..Im hooking up a 2 hp collector in a 20×20 garage. at this point all i want is two 4” flexible hoses that i can hook up to various tools. the shop is evolving right now, so will run hard lines in the future. as i dont have layout nailed down
my question is, does it matter if i have the two blast gates at the intake of the collector as opposed to at each machine performance wise ? got talked in to the slinky style hose from rockler. not sure i’m a fan, is just a standard flex hose recomended ?

5 replies so far

View brtech's profile


1056 posts in 3192 days

#1 posted 02-05-2011 12:36 AM

It doesn’t matter as long as everything is air tight.

No flex hose is good. The better ones have smoother interiors. You compare hoses by looking at the interior ridges, bigger is worse. Of course, the easier it is to use, the more likely you are to use it, so that may trump the ridge issue. Another problem is hard turns. You don’t want small radius 90 degree turns, you want big radius, or, in hard duct, two 45s with a short straight section between them.

At least a couple of ‘jocks have hard piped without glue – using tape and suction to hold the system together. That way, you can disassemble if you move stuff. Never tried that myself.

What kind of filter do you have on the DC? If it’s not .5 micron, you need an upgrade. Check Wynn Engineering. If you don’t upgrade, wear a respirator.

View widdle's profile


2069 posts in 3268 days

#2 posted 02-05-2011 01:35 AM

Thanks br.Its a cartridge filter that came with the Grizzly unit.I think 1 micron or sim..Thanks again for the info..once tools are somewhat glued down i’ll get some more ridged hose..sounds like i got the worst possible hose..

View NBeener's profile


4816 posts in 3443 days

#3 posted 02-05-2011 01:48 AM

There seem to be two categories of hose:

1) Not very good, and
2) Ridiculously expensive.

You’ll be fine … until it’s time to plumb the shop.

At that point … if it were me … I’d pick up a used copy of “Woodshop Dust Control,” and … try to “do it right.”

Buy once, cry once ;-)

-- -- Neil

View SnowyRiver's profile


51457 posts in 3750 days

#4 posted 02-05-2011 03:22 AM

I agree…you will be fine with the blast gates near the dust collector. They usually are put near each machine since these are branchs from a main duct and also its convenient, but in your case it will work OK. My shop is about the same size as yours so you collector will work great. I used the flex duct too and its OK, but it would be nice to have the steel ducts, but they are out of site in price. Maybe someday I will change them out.

-- Wayne - Plymouth MN

View widdle's profile


2069 posts in 3268 days

#5 posted 02-05-2011 04:03 AM

Right on wayne. looks like you got your shop dialed in nice.. nice set up..

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