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Reply by John_H

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Posted on Dust Collection Duct Design

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John_H

176 posts in 1792 days


#1 posted 02-09-2018 08:18 AM

I bought one of those ‘Y’s along with a couple of aluminum blast gates and some other fittings from Woodcraft last week – they are having a 25% off sale right now

I never wanted to get into having a ‘permanent’ type setup with trunk lines running everywhere – instead, I use a single 5” flex hose to connect to my combination machine (jointer/planer/shaper/table saw) which really simplifies things. Recently I got a great deal on some more 5” flex hose from Amazon Warehouse so I decided to add a second 5” flex hose – which is why I bought those parts from Woodcraft

I just finished installing it a couple of days ago, so I don’t have a lot of use with it yet, but so far it has worked out great. I have a single piece of 5” metal duct coming off the dust collector and the end of the 5” Woodcraft Y slipped snugly inside. I also wanted to add two blast gates at the Y – which is when I started to run into problems.

The outside diameter of the end of the Y are about the same diameter as the blast gate so you need some sort of union/coupler. Probably most people would use flex hose or whatever. I wanted something a little more rigid and would not take up a lot of space, so I grabbed my heat gun and with a little patience I was able to heat up the ends of the Y so that they became soft enough that I could force the fitting on the blast gate inside. I then screwed the two parts together with self tapping screws and it feels real solid.

Another problem crept up was I wanted to use a ‘quick connect’ type fitting directly to the blast gate because I don’t always have a hose connected. But, the standard 5” quick connect type fittings I also bought, were a little too big. I was able to work around it by using 4” rubber Fernco connectors (about $7 each on Amazon). So one end of the Fernco goes over the blastgate fitting and is held in place with a worm clamp and the quick connect fitting then goes over the rubber end of the Fernco for a pretty tight friction fit.

So in this pic you can see the Fernco on the upper blast gate (they come with worm clamps) and on the lower blast gate I have my 5” flex hose with the Woodcraft 162288 quick connect coupler attached to the other Fernco

Woodcraft also has a 5” to 4” connector if you wanted to do something similar with your 4” hose (162287)


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