Dust collection - Do something about it... - Router Forums
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post #1 of 35 (permalink) Old 09-22-2014, 08:48 PM Thread Starter
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Default Dust collection - Do something about it...

I read an article yesterday about the hazards of invisible sawdust in a small shop, and it frightened my so badly that today I redid my dust capturing system by building a filtered vent to the outside of the shop. There is a collection barrel that catches most of the big sawdust and chips, but the problem was that there was a high filtration dust bag at the end of the suction system located inside the shop which leaked invisible dust inside the shop. I know that's so because of the coughing fits after working in the shop. I'm sure it would not have passed an OSHA inspection.

The box in the picture replaces the old filter bag and pumps all remaining dust through a washable filter and then outside. This not only got the fine particles that cause lung problems out of the shop, but markedly increased the air flow through the system so even more dust gets sucked in from each power tool. I hope this post will encourage others to find a workable fix because fine dust can do you in.

The filter holder on the outside has a closable slot to drop in and pull the washable filter. The box is attached to the front of the shop (It will be painted later), and the last shot shows the dust collection system inside -- Long hose to the tool, into the separator bin, up the black hose, through the blower, then out the horizontal hose and through the wall into the new exhaust filter. Cool. Kind of messy now, but I'll finish it all up neatly over the next few days. Hope this inspires some of you to do something about that invisible dust in your shop that threatens your health.

Have any of you found ways to eliminate or reduce the dust hazard in your shop?

I also added a copy of the article that motivated me.
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post #2 of 35 (permalink) Old 09-22-2014, 10:53 PM
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I've been considering doing the same thing for the same reasons.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #3 of 35 (permalink) Old 09-23-2014, 12:33 AM
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The only problem I can see with venting the DC outside is that all heat/AC (if you have it in your shop) will be vented out with the dust.

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Fort Worth, Texas
City where the west begins.
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post #4 of 35 (permalink) Old 09-23-2014, 05:01 AM
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Quote:
Originally Posted by curiousgeorge View Post
The only problem I can see with venting the DC outside is that all heat/AC (if you have it in your shop) will be vented out with the dust.
so let's throw another hat into the ring...

enclose the DC in it's own room...
this room can be internal or external to the shop...
it's sound dampened/proofed...
it has smoke sealed X large doorway for access...
since my DC's are in the corners of the shop both internal walls have doors...
one wall has a filtration pack similar to DRT's that vents the DC's exhaust air back into the shop for HVAC recovery...
I put the filtration packs in the doors... super easy to service...

because of out of sight out of mind...

the DC has a run indicator light visible in the shop...
the inlet side of the DC has a manometer hooked to it w/ the gage external to the DC's ""closet"" and internal/visible from inside the shop for continuous monitoring of the DC's filters..
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This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #5 of 35 (permalink) Old 09-23-2014, 06:13 AM
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I like Stick's method. Several months ago I realized how bad my shop was (in the basement). I installed a Jet filtration suspended from the ceiling in the shop. The outer filter really showed the dust after the first day. One of my biggest problems is dust leaking from the dust collector. I also keep a box fan sitting on the floor running all the time with a washable filter leaning against the back. It helps, but still not where I would like to be. The furnace has a 6" thick filter. It helps a lot. Malcolm / Kentucky USA
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post #6 of 35 (permalink) Old 09-23-2014, 09:59 AM
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If your really worried about your health, wear a quality dust respirator.

Last edited by Woodchuck1957; 09-23-2014 at 12:44 PM.
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post #7 of 35 (permalink) Old 09-23-2014, 11:47 AM Thread Starter
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I have a respirator that works very well, but got out of the habit of wearing it. Stick: I thought of putting it outside the shed and can still do it. It is a bit unsightly since there is a garden area around it, but since my cough is now subsiding, I think the idea sounds better every moment. Beside that, I would pick up a little extra floor space. I do have a fan and filter hanging from the ceiling that has been filtering out the dust. But first, a major cleanup and removal of everything that is on the floor that interferes with vacuuming. Off to the garage it goes. Thanks for the suggestions. What I've done is a big improvement already, especially the increased air flow.
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post #8 of 35 (permalink) Old 09-23-2014, 11:52 AM Thread Starter
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Quote:
Originally Posted by curiousgeorge View Post
The only problem I can see with venting the DC outside is that all heat/AC (if you have it in your shop) will be vented out with the dust.
George, I only run the DC when I'm running a tool. Otherwise it stays off. I have a room AC installed and didn't notice any change in temp even running the DC for 15 minutes. Winter may be another story. We'll see. The reduction in coughing from dust will make it worth buying a down vest to keep warm.
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post #9 of 35 (permalink) Old 09-23-2014, 12:35 PM
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so make the outside DC closet look like the rest of the building and vent back into the shop...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #10 of 35 (permalink) Old 09-23-2014, 04:12 PM
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If you win a lottery, you could also install a heat recovery unit.
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