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Multi-Port Dust Collection Manifold

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Project by DaveTPilot posted 03-20-2013 12:10 AM 3687 views 13 times favorited 10 comments Add to Favorites Watch

I needed a multi-port manifold. I thought about just using PVC wyes but would still need to make the dust gates. It works really well and is very convenient. If I were to do it again, I would have made the bottom the same size as the top and add another port to make it a 4-port manifold. I didn’t really need the 4th port but it would be nice to have a spare.

I used all scrap wood. I “painted” the particle board with Durham’s Rock Hard Water Putty to give it a nice texture. Then painted it with Forest Green spray paint for wood. I think it came out pretty cool.

Durham’s is a great product. It’s available at HD and Lowes, it’s inexpensive and extremely versatile. You can even add small amounts of paint to better match the wood you are working with.

That’s my product pitch. :)

-- How valuable is time to a person who spends his disparaging the beliefs of others? --David Berthelette www.pilotwoodworks.com





10 comments so far

View Joe Lyddon's profile

Joe Lyddon

7747 posts in 2717 days


#1 posted 03-20-2013 01:19 AM

Looks like a very unique way of doing something…

... have to study… busy rt now…

Thank you.

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

View Hawaiilad's profile

Hawaiilad

2028 posts in 1686 days


#2 posted 03-20-2013 02:37 AM

I see and like the blast gates you made, but from where I set it looks like it hooks to the side of a cabinet. Am I missing something?

-- Larry in sunny and warm Hawaii,

View DaveTPilot's profile

DaveTPilot

270 posts in 1963 days


#3 posted 03-20-2013 02:49 AM

@Larry, you are not missing anything. I attached it to the side of the cabinet. My first intention was to screw it to the wall, (concrete block), but realized I could very easily screw it to the cabinet. Actually, the screws are from the inside of the cabinet.

-- How valuable is time to a person who spends his disparaging the beliefs of others? --David Berthelette www.pilotwoodworks.com

View Hawaiilad's profile

Hawaiilad

2028 posts in 1686 days


#4 posted 03-20-2013 03:31 AM

Thanks for the input Dave, but I’m still a bit confused, is your dust collection unit in the cabinet? Just wondering.

-- Larry in sunny and warm Hawaii,

View DaveTPilot's profile

DaveTPilot

270 posts in 1963 days


#5 posted 03-20-2013 10:51 AM

Oh, sorry. No the DC is on the other side of the garage. There is a 2” PVC pipe coming out of the top that connects to my 4” ductwork.

-- How valuable is time to a person who spends his disparaging the beliefs of others? --David Berthelette www.pilotwoodworks.com

View GaryL's profile

GaryL

1079 posts in 1495 days


#6 posted 03-20-2013 10:54 AM

It looks like your hooking up the shop vac to the pvc on the top on then splitting into three intakes?
Nice idea. How has it worked out?

-- Gary; Marysville, MI...Involve your children in your projects as much as possible, the return is priceless.

View Roger's profile

Roger

14649 posts in 1469 days


#7 posted 03-20-2013 12:43 PM

Looks like a gr8 intake. I’ll bet it works just fine

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View DaveTPilot's profile

DaveTPilot

270 posts in 1963 days


#8 posted 03-20-2013 12:49 PM

It works really well. Here are a few more pics to show the duct work.

From the top of the multi-port manifold:

To the 4” duct work:

To the DC and separator:

-- How valuable is time to a person who spends his disparaging the beliefs of others? --David Berthelette www.pilotwoodworks.com

View MrRon's profile

MrRon

2846 posts in 1908 days


#9 posted 03-20-2013 04:21 PM

Great idea, but have you noticed any loss due to friction from the plywood surfaces?

View DaveTPilot's profile

DaveTPilot

270 posts in 1963 days


#10 posted 03-20-2013 11:55 PM

There is always loss anytime you do anything to the air flow….change direction, add friction, leaks…etc.

I just realized that in my haste to post, I forgot to give credit for the design. This design is not completely mine. It is based on a design I saw in a book. Controlling Dust in the Workshop In the book, the author used 4” pipe and gates. I didn’t need 4” for the tools I planned for my manifold so I used the 2” pipe.

Without getting into a discussion on Bernoulli’s principle let’s just say that the suction at then end of the hose is quite sufficient. LOL. I do have a powerful dust collector, which obviously helps. I don’t get too wrapped around the axle about the science of dust collection. I have read quite a bit about it but in the end…it just sucks. (pun inteneded)

So my philosophy regarding the best dust collection system, pipe size, number of turns, type of bends, length of runs…etc is that if it works and works well…leave it alone.

As a test, I vacuumed a bunch of chips and dust from the counter top and floor. Some of the chips were quite large from some forstner bit activity. There were even some small blocks of wood (1”x1”). It sucked up everything I threw at it without any complaints and it all ended up in my dust collector bin.

When I have some time at home again…I’ll shoot some video to show how much it sucks. (sorry, it never gets old)

-- How valuable is time to a person who spends his disparaging the beliefs of others? --David Berthelette www.pilotwoodworks.com

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