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Dust Collection vent to the exterior of home.

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Forum topic by Tedstor posted 11-08-2013 01:34 PM 1365 views 0 times favorited 17 replies Add to Favorites Watch
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Tedstor

1505 posts in 1378 days


11-08-2013 01:34 PM

I recently sold my small 3/4hp Delta DC. It worked well, but took up valuable floor space. My intention was to try to get by with only a shopvac, but thats not going to cut it.
I am considering some sort of small DC that I can mount to the wall, and hopefully allow the dust to jettison through the wall of my garage, to the exterior of my house.
Has anyone done this?
My initial thoughts are to use an exterior dryer vent. Like this:

Maybe buy a 55 gal drum to place under it? OR Maybe just let the wind take care of chip disposal?
Does anyone have any ideas? Keep in mind that I don’t need a 100hp, super-turbo-charged dust collection system. My machines are on wheels and I only plan to have one machine hooked up to the DC at any given time.


17 replies so far

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jonah

453 posts in 2044 days


#1 posted 11-08-2013 01:42 PM

The only thing that’d stop me from exhausting directly outside like that is that you’d basically be providing a buffet for insects. Imagine a big pile of chips sitting right against the side of your house. Now imagine you’re a termite.

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Tedstor

1505 posts in 1378 days


#2 posted 11-08-2013 01:44 PM

True. But I already have hardwood mulch all around my house. So a little extra shouldn’t hurt. LOL. Bugs gotta eat too.

Oh- and I should add that if I anticipate an especially large accumulation of chips- say, after planing 100 bdft, I’d probably set-up a trashcan or something to collect the chips.

View Fred Hargis's profile

Fred Hargis

2033 posts in 1239 days


#3 posted 11-08-2013 02:22 PM

A lot of folks vent outside, but they generally have some kind of separator to get the bulk of the chips. Then the wind takes care of the fine stuff. I think I would have a backup plan of putting a can with a separator on it outside, and let the exhaust of that blow freely. So try it as you plan, and be prepared to modify as needed. I suppose any outdoor separator would have to be made weather resistant in some fashion, or put in an enclosure.

-- Our village hasn't lost it's idiot, he was elected to congress.

View bigblockyeti's profile

bigblockyeti

1787 posts in 466 days


#4 posted 11-08-2013 02:38 PM

I think you’d be alright with the finer dust being evacuated to the outside, but putting a barrel or something of that nature would be a good idea for the bigger stuff. I wouldn’t be able to do that for three reasons, the lost heat, the neighbors and the WIFE!

View Douglas's profile

Douglas

312 posts in 1305 days


#5 posted 11-08-2013 02:40 PM

I’d love to be able to vent outside, but my shop is a garage… In the middle of the city. So I doubt my neighbors would appreciate it. But if you can: go for it. No need for a fine dust filter stage!

-- Douglas in Chicago - http://dcwwoodworks.com

View Gene Howe's profile

Gene Howe

6039 posts in 2174 days


#6 posted 11-08-2013 02:42 PM

My HF 2hp collector is vented directly outside No baffles or deflectors. Just a straight piece of 4” single wall stove pipe. There is a separator in line, so the dust exhausted is minimal and fine. Not a build up problem at all. No neighbors to complain, but the amount is so small, I doubt that any would anyway. You could run it into a collector out side, but you’d soon find the amount collected would make it unnecessary.
Some will attempt to dissuade you, citing the loss of conditioned air from the shop. I’ve run this set up for several years and have not experienced any loss of heated air. (shop is not cooled in the summer) In fact, the exhaust is not appreciably warmer. With the separator in line and 20’ of hose, most heated air collected at the saw(s) is contained and dissipated within the shop.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

View bondogaposis's profile

bondogaposis

2743 posts in 1097 days


#7 posted 11-08-2013 03:25 PM

The only downside is if you heat your shop in winter. You will be blowing out heated air, this may not be a problem in a climate where 50° is considered cold. However if you live in Minnesota and it and it’s -40°, you would not want to be blowing heated air outside. It just depends on your locale and whether you work in cold weather.

-- Bondo Gaposis

View Gene Howe's profile

Gene Howe

6039 posts in 2174 days


#8 posted 11-08-2013 04:06 PM

Well Bondo, up here in the mountains, we have several days of subzero weather. But, nothing like -40. At that temp, I’d be very tempted to stay in the house. At any rate, as posted earlier, even at our lowest temps, I’ve not noticed an appreciable loss of heat.
YMMV

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

View Tedstor's profile

Tedstor

1505 posts in 1378 days


#9 posted 11-08-2013 04:11 PM

My garage isn’t climate controlled in any case. If it gets too cold to work, I just turn in my man-card and go inside :)

View Loren's profile

Loren

7822 posts in 2393 days


#10 posted 11-08-2013 04:18 PM

I have thought about venting to the outside, but I would
use a bag. There’s a way to filter through water too. 1st
stage a bin for heavy chips, 2nd a tub pulling the air through
water. Not much fine stuff will get through the water.

-- http://lawoodworking.com

View unbob's profile

unbob

465 posts in 649 days


#11 posted 11-08-2013 05:52 PM

Yes, venting out side will pump the heat out, and can do it quick. It can also suck doors open.
In commercial cook lines, make up air system is used near the cook line hoods to prevent those problems.

View pintodeluxe's profile

pintodeluxe

3554 posts in 1559 days


#12 posted 11-08-2013 05:58 PM

I would run a stub length of flex hose out the side of the shop. Make a rubber flange that will seal around the hose, and install the flange on a garbage can lid. Home centers sell rubber flanges like this.
That should keep the dust in the can where it belongs, yet make it easy to remove the hose and empty the can.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View Grandpa's profile

Grandpa

3203 posts in 1421 days


#13 posted 11-08-2013 06:32 PM

The problem I see is with the amount of discharge space your dryer vent is offering. This will block off over half you discharge area. That would be like using a 2 inch dia. hose for your machines. The trash can mentioned above would still have to have an opening to allow for discharging the air. Dust collectors are not sucking machines, they are blowing machines. They blow the air out to wherever. The result is the vacuum left on the intake side of the blower. You need the right amount of area for discharge.

View Tedstor's profile

Tedstor

1505 posts in 1378 days


#14 posted 11-08-2013 08:56 PM

Thanks for all the replies. I’ll have to start buying components, and see what I can slap together.

View BurtC's profile

BurtC

90 posts in 1876 days


#15 posted 11-09-2013 03:09 PM

I vent my dust collector directly outside thru a dryer vent. I use the plastic type with multiple vanes. Works great and quiet, with the blower outside in cabinet. I have a wall switch inside to turn on/off upon demand, that way I do not loose much heat/AC. I use electric space heaters so monoxide is no problem as with gas heaters.
Go for it!

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