Dust collection - Do something about it... - Page 2 - Router Forums
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post #11 of 35 (permalink) Old 09-23-2014, 04:28 PM Thread Starter
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Default Thanks Stick for the suggestion.

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Originally Posted by Stick486 View Post
so make the outside DC closet look like the rest of the building and vent back into the shop...
Oh, I see, take the dust out of the shop, filter and filter it again, then return the clean air to the shop through a hepa grade final filter. If there were a succession of chambers with a filter between each, and the hepa filter at the return end that could work. That would keep warm/cool air inside.

With my present setup, I've been very careful to seal every connector so there are no leaks in that part of the system, so most of the remaining dangerous dust will be uncollected, airborne fine dust from the tools. The overhead filter will clear a lot of that. But there is a lot of noise in the shop from the blower.

I think the thing that will make the most difference is getting everything off the floor (other than tool stands on casters) so there is no place for dust to hide from the vacuum. I could also build a porch or deck in front of the shed and pull the biggest dust producers (sliding miter, sander) outside when I need them--Oh my gosh, another project.

Between the powered respirator mask, ear muff noise protection, a sweat band and my glasses, I am well protected, but look a lot like a creature from outer space.

Another positive to all this is seeing a number of interesting projects in the near future.
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post #12 of 35 (permalink) Old 09-23-2014, 04:31 PM Thread Starter
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Originally Posted by Cherryville Chuck View Post
I've been considering doing the same thing for the same reasons.
It took one day, about $50 bucks for material, filter and hardware. The increase in air flow is very noticeable.
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post #13 of 35 (permalink) Old 05-04-2019, 10:25 AM Thread Starter
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I'm reviving this thread because the idea of enclosing the DC and running filtered and refiltered air back into the shop is really appealing. Given my existing outside location, I think enclosure is a very practical way to go. And keeping the heated/AC air inside is appealing.

I made a ceiling mounted fan with filters that have a metal holder for a 20x20 filters. I can recycle that holder into the shop wall so it will be easy to change filters. I think the vent will let in a little more noise, but the tradeoff would be worth it. As quiet as it is now, I can see myself forgetting to turn it off.

Enclosure and recirculation was Stick's suggestion and I'd completely forgotten about it. So this thread deserves re-reading.
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post #14 of 35 (permalink) Old 05-04-2019, 11:53 AM
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From reading the various links and tech articles published and shown in several discussions here, my take away are these:

1) The deadly dust is VERY small, typically invisible, and stirred up easily by walking in the shop, etc.
2) Venting the D/C outside is the only smart solution; this is what industry has been doing for generations, because it is effective. The small dust is immediately neutralized and eventually dropped to the ground once it attaches itself to water molecules, so the danger is mitigated.
3) Trying to filter down to the micron levels with the D/C in the same space and related necessary air flow requirements is unattainable within both reasonable budgets and machinery /space required for a home shop.
4) The argument about heating and cooling losses are irrelevant in the context of this conversation IMO. Much easier to deal with that than to continue to inhale poisons. I live in Canada and am forced to heat my partially insulated garage with electric heat all winter, adds about $100/month to the bill, but ask me if that changes anything. In summer I sweat my balls off, but cooling fans help, altho that is obviously only good if the place is clean.
5) Wearing a respirator is obviously paramount, but impractical, and no one is going to religiously do it, especially since it adds to fogging of safety glasses etc.

My current small 2.5" D/C build is going to get fired up today - I have decided to either run the shop vac outside of the garage (best solution) or at least vent it outside (not so good, but better than running inside). Once this is rolling, and the car gets some attention, I will connect the 4/5" D/C located in the shed and see how this all goes. Will likely need to build/cut in a larger vent intake window so there is crossflow to balance the outlet suction. Planning on running a slightly open permanent intake so the D/C can clean the air constantly. Open garage door may be the solution in the beginning.
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post #15 of 35 (permalink) Old 05-04-2019, 01:12 PM
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I vent my DC outside thru the shop wall with adjustable 90 degree duct ell. I use a cyclone separator mounted on 32 gal metal trash can. before the DC motor /impeller which I mounted on a shelf mad for it on the wall. It is up high so I did not lose floor space. and let what gets by blows out of the shop, what a difference. My shop is heated and cooled by a large window mount AC that heats ( I cut hole in wall framed it with trim), I have not noticed any loss of heating and cooling. Good Luck.
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post #16 of 35 (permalink) Old 05-04-2019, 04:47 PM
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Dust collector lives out side. I used to crack the door and run the hose underneath, but on more than one occasion the door crushed the hose when I pushed the wrong button on the wall. Now I use a semi-permanent solution. For the months I am home, I raise the garage door 4 inches on rigid foam insulation, with just enough gap for the hose to go under. It's far from perfect, but it has stayed like that for 2 months at a time without any water making it inside during the nasty weather. When I go away, just disconnect and close the door all the way. I would love to take it out the side of the garage, but I am really not interested in putting a 4 inch hole through a block wall.... I have thought about taking one panel out of the door and hard piping it through the door, but I am sure one of us would open the door with the hose attached.
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post #17 of 35 (permalink) Old 05-04-2019, 06:35 PM
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I have an overhead air filtration unit for the smalls inside.... DC Flex hose runs from tool to port through wall to Separator outside to DC outside to recently added 5 micron bag. One 6 hp shop vac at the Miter Saw Stand accompanies the DC another 6 hp shop vac is for Router and ROS and Pocket Holes

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post #18 of 35 (permalink) Old 05-04-2019, 09:22 PM
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I would like to move my DC out of the shop but here in the PNW i’m Concerned about the damp. I have an unheated outbuilding about 2’ away that could house It. Has anyone tried this, Herb possibly.
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post #19 of 35 (permalink) Old 05-06-2019, 07:28 AM
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I have struggled with dust in the shop for years. Also had a woodworking friend that just died from lung cancer. His shop with a total waste with dust.

I purchased a Dylos DC1100 dust monitor that runs all the time. It is located in the center of my work space. It generally shows very low numbers. But occasionally when I empty the dust collection bags and re-install them the monitor goes way up. I shut off the equipment and leave the shop for 1/2 hour or so. I have two filtration systems suspended from the ceiling running. Afterwards I will make sure there are no holes in the bags and they were installed properly. I would never run any equipment without the monitor running. I can see the numbers as I run the thickness planer, tablesaw and sander.

Malcolm / Kentucky USA
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post #20 of 35 (permalink) Old 05-06-2019, 09:31 PM Thread Starter
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I decided to upgrade one of my DC chip collectors with a Super Dust Deputy. Turns out they are packaging the 4 inch model with a fiber drum, which is too small to suit me, and I already have them. Emailed a request to sell just the SDD unit without the drum. Hopefully they will respond and I'll share. They want an additional $50 for the small drum, and I think you must buy a lid for their larger drum, which is bigger than I want. Humm. Unnecessary obstacles in the way of getting the DC setup you want.

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