Request your opinions on optimized dust collector position. (two options described)

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Forum topic by whiterabbit posted 03-22-2011 06:27 PM 1169 views 0 times favorited 3 replies Add to Favorites Watch
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1 post in 2648 days

03-22-2011 06:27 PM

Hi Guys,

I’m new to the dust collector concept, and I’m a big fan already. I’m still goofing around with proof-of-concept with great results. My criteria is not chip collection, it’s the nasal reaction I get when working with phenolic (MDF) which all but disappeared after DC experimentation!

The proof-of-concept was put the dust collector next to the tablesaw with a 4” hose. Now I’ve picked up the 6” plumbing, refurbished the table router, and need to permanently place the DC.

I have a penn industries 2HP DC, 12” impeller, 1 micron filter.

I’ve got two options:

Option #1: Place the DC in a triangle between the table saw and the table router, these are the #1 dust producers in my shop. The DC takes up lots of room, but the plumbing is nil. A single 10’ 6” hose which gets connected via quick release to each tool when needed. done. I don’t like this option because it displaced my bandsaw to get placed in this location. Takes up valuable wall space. Only two benefits is the wiring is done and the pipe length is basically nothing.

Option #2: I am building a shed in my backyard, attached to the shop. I’m playing with a design that adds a 2’x3’ section capable of being insulated, this could contain the DC (for the record, I’m already planning on moving my compressor to an adjacent 2’x2’ shed compartment, also sound insulated. The benefits are two fold. This DC is pretty darn quiet, but this would entirely eliminate the noise. The second benefit, is that any fine dust collection that DOES happen and seeps through the filter, is exhausted out of my shop entirely. I do not have a furnace or any other carbon monoxide concerns. The big big negative is it places the DC about 30 feet away by ductwork. The duct would be all DWV hard pipe at 6” diameter, with an exit port located where the DC is now (triangle w/ TS and router), again hooked up one at a time using flex pipe.


So, I understand that flex pipe, due to frictional wall losses, acts like an equivalent hard pipe of greater length. I’ve heard by as much as a factor of 3. So adding 30 feet of hard pipe to 10 feet of flex seems like it would double the conductance from the DC? I’m concerned about losing fine dust collection. I don’t mind sweeping chips, but I’m definitely getting sensitized to fine particles.

So if it were YOU, what would you be thinking? short conductance vs get-the-dc-out-of-the-shop? Think the risk poses no real loss in fine dust collection?

3 replies so far

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3259 posts in 2701 days

#1 posted 03-22-2011 06:51 PM

I recently looked at a shop (photos) that was set up by a fellow LJ. I wrote to cabmaker and asked him some questions about the pipe he used etc. He directed me to a place in Ft Worth TX. Since I live in SW OK that was good to know. I looked at the website and ordered a free catalog. This cam e from Air Handling in Woodbridge, CT. Look at to order this catalog. It is free. It comes with charts and recomendations for tools and pipe sizing. I think this would answer all your questions with no guessing from anyone. I have a situation in my shop. I have no DC at the momentbut do want one soon. I have a room that I added last summer and I do plan to put my DC out there. it is just through the wall from the main shop. I think getting the noisy equipment out of the shop is imperative. Good luck on your decision

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14 posts in 3468 days

#2 posted 03-30-2011 06:38 PM

From my experience moving that 2hp dust collector 30’ away to a seperate building will cause problems. The first is that the length of the run will reduce the suction greatly. The second problems comes from the fact that when all of that air is being sucked out of the shop you need an adequate source of return air. Your conditioned air, a/c or heated, will also be replaced by that unconditioned air from the outside.

I have my shop in my baasement and I had a DC similar to yours. It was not big enough to collect from the entire shop unless I hooked it up to one machine at a time. I finally bit the bullet and bought a cyclone and it services my entire 24 X 32 shop. I have metal runs to all of my machines, 11 drops, with blastgates at each drop. I just open the blastgate where I am working and push the remote control to start or stop the cyclone. That’s the best money I ever spent.

-- Bruce - Fav. Quote "A man's got to know his limitations." Dirty Harry Calahan

View a1Jim's profile (online now)


117118 posts in 3603 days

#3 posted 03-30-2011 07:00 PM

I like my dust collectors outside just to save floor space and to keep the noise down. As to how well it works depends on how you have your system set up. I believe there are free services on line that can help with that.
Here are a couple things that can help

-- wood crafting & woodworking classes

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