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Dust collection in the shop, putting the DC outside the shop.

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Forum topic by Blackie_ posted 08-07-2011 04:39 PM 2911 views 0 times favorited 16 replies Add to Favorites Watch
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Blackie_

4530 posts in 1972 days


08-07-2011 04:39 PM

I’m not sure where this needs to go so I’ll stick it here. :)

I’ve read deep into this topic, others threads, reviews and have found many different avenues, I’ve also read Bill Pentz review on this subject. During my research I’ve been hearing good things about the HF DC and have the discounted coupon, planing on buying one within the week, currently I’m using a 5.5 HP 15 gal shop vac.

So now my question is if I locate the DC system outside the shop, pipe it through the wall would I need to worry about any other type of separator, filter or baffle? Also would there be a need for an air supplemental filtration, my shop is 12 X 16.

Thanks
Blackie

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs


16 replies so far

View Fred Hargis's profile

Fred Hargis

3926 posts in 1952 days


#1 posted 08-07-2011 05:13 PM

Using the bags will keep the mess contained outside, but there’s no real reason to do so. But if you had a pre-separator, it might keep good sized chunks of wood from hitting (and maybe damaging) the impeller. Even so, I wouldn’t fool with it…..the impellers are pretty durable and it would take quite a hit to damage it. The make up air question may need addressed, depending on how tight your shop is, it’s location, appliances that may be in there…etc. For instance, if the DC draws air into the shop through,say, a gas water heater flue, you could have all kinds of problems. As for the supplemental filtration, I’m guessing you refer to an ambient air cleaner. Even a world class dc can’t catch everything, so you will have dust that needs to be removed.

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

View MrRon's profile

MrRon

3926 posts in 2703 days


#2 posted 08-07-2011 05:17 PM

If your shop is heated or air conditioned, an outside DC will suck out the heat or cooled air along with the dust. If your shop is located in a rural area where neighbors are not too close, you could do away with filters and allow the fine dust to be blown to the outdoors. You would still use a container to catch large particles and chunks. I have the HP DC and have it hooked up in that fashion except it is inside my shop. The final exhaust is to the outdoors. Placing your DC outside will require some sort of enclosure to protect it from the elements. In my shop at least, I don’t worry about make-up air as it is not tight enough.

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Blackie_

4530 posts in 1972 days


#3 posted 08-07-2011 10:49 PM

Fred, not tight, no plumbing only electricity, the shop is a stand alone and also has a doggy door in the entry way but it is insulated and has a window unit and yes I was speaking of a ceiling mounted air cleaner or something of that sort.

MrRon, is this thing going to pump out a lot of my cool air? Due to the shop’s size I’m just trying not to clutter it up with machinery as for as providing shelter for the DC outside that’s not a problem and was planing on doing that.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View ocwoodworker's profile

ocwoodworker

209 posts in 2464 days


#4 posted 08-08-2011 01:05 AM

Blackie,
I have a typical 20’x20’ garage. All in all a good size but us woodworkers are always looking to re-arrange our shop to maximize our tools (toys). The first no-brainer was the DC. It’s loud, takes up valuable space, fine micron dust still make it past the filter (the only particles which are bad for you) and its loud. I put mine just outside the shop and enclosed it. I insulated the walls with styro foam. Now all I do is flip the switch with like I’m turning on a light and away I go.
P.S. I also put my big air compressor in the same shed with a flip switch. Best thing I did (besides getting a Saw stop TS).
Awesome idea. I can’t think of a downside to it.

-- I'd like to believe Murphy's Law haunts my woodshop, because if it's Karma it would mean I had something to do with it. - K.R.

View Sawkerf's profile

Sawkerf

1730 posts in 2528 days


#5 posted 08-08-2011 02:00 AM

Putting your DC outside has many benefits (noise, etc), but if you have a conditioned workshop (heating/cooling) you’ll probably run up your heating/cooling cost. DC’s move a lot of air, and if it exhausts outside, you gotta make it up from somewhere.

If you have nearby neighbors, they might object to the noise and dust, too.

-- Adversity doesn't build character...................it reveals it.

View Jim Finn's profile

Jim Finn

2408 posts in 2381 days


#6 posted 08-08-2011 02:49 AM

I have my dust collector in an insulated room beside my workshop. Keeps is quiet enough to hear the radio.

-- "You may have your PHD but I have my GED and my DD 214"

View MrRon's profile

MrRon

3926 posts in 2703 days


#7 posted 08-08-2011 07:25 PM

Blackie, A shop of your size, may lose more cooled or heated air than a much larger shop. Mine is 24×48 and I don’t notice any loss of conditioned air.

View Blackie_'s profile

Blackie_

4530 posts in 1972 days


#8 posted 08-08-2011 11:44 PM

I’m going to go ahead as planed, I figure if it doesn’t work out I can always bring it inside and make the changes. I’d still like my air compressor outside so not all will be lost.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View Blackie_'s profile

Blackie_

4530 posts in 1972 days


#9 posted 08-09-2011 12:49 AM

To get the most out of pulling dust out, using 4” bigger is idea from my research but since all of my machinery are ported at 2 1/2” how much difference would it make to reduced the 4” down to 2 1/2” ?

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View Grandpa's profile

Grandpa

3256 posts in 2135 days


#10 posted 08-09-2011 05:06 AM

I was in the Springfield, MO, Grizzly store, drooling and visiting with a clerk. I was looking at a 5 HP dust collector and I started talking about moving the collector to an area outside my shop. He suggested taking the return filters off and extending them through the wall and allowing them to exhaust the warm air back into the main shop bldg. I have never done this nor seen it done. I have never heard anyone on this sight suggesting it but is sounds good. I know there are a lot of things that sound good or look good on paper but when the rubber hits the road sparks start to fly. I suppose if this were done it would have to be designed for each different brand of collector. Just thought you might be interested.

View Fred Hargis's profile

Fred Hargis

3926 posts in 1952 days


#11 posted 08-09-2011 01:07 PM

If you choke the hose down to the 2 1/2” ports, it will hugely reduce your airflow. Don’t beput off by the puny factory ports, upsize them to whatever you want. It goes back to airflow, more is better…...

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

View MrRon's profile

MrRon

3926 posts in 2703 days


#12 posted 08-09-2011 06:07 PM

Grandpa, The main problem with filters is: they get clogged and have to be cleaned/replaced. Recirculating the exhaust air back into the shop will also carry fine dust back in (the worst kind). My method, catches the large particles and chunks in an auxiliary container and blows the fine dust outdoors.

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Grandpa

3256 posts in 2135 days


#13 posted 08-11-2011 05:13 AM

You are correct and I think your method would be best if you could stand to lose the conditioned air.

View crank49's profile

crank49

3980 posts in 2430 days


#14 posted 08-11-2011 05:58 AM

You could always put the collector outside in an insulated shed that is attached to the shop.

Then frame an opening between the shop and the shed which you fill with 2 or 3 layers of air filters. Ideally the filters would be the same high effeciency type used in the ceiling suspended air filters.

This gives you the best of both worlds. The noise of the collector is outside and most of the conditioned air can pass right back into the shop after it gets filtered.

Otherwise, if your shop has a 9 ft ceiling it contains about 1728 cubic feet of air. A 2 hp HF collector can extract about half of that volume every minute. If you are air conditioning that shop the air conditioner will have to deal with 30 air changes per hour. It will never shut off.

Also, as was mentioned earlier, this can be very dangerous if you have any vented gas appliances in this area. You need to verify that the flues are working correctly.

-- Michael: Hillary has a long list of accomplishments, though most DAs would refer to them as felonies.

View Blackie_'s profile

Blackie_

4530 posts in 1972 days


#15 posted 08-11-2011 03:06 PM

Ok I think I have the perfect plan, the shop is a stand alone, does not have any plumbing of any kind and a doggy door cut into the entry way, I have the plastic slide panel over the doggy door atm. The shop has three windows, north, south and west, I’m planing on taking the wall with the south window and attaching an insulated external 8’x8’x2.5’ shed attaching it to the building which will allow access from the 24”x24” window port thus I can shut the window or open it with filters in play.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

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