Shop Upgrades #7: Air Quality: Dust Collection and Air Filtration

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Blog entry by bkseitz posted 01-06-2016 12:49 AM 844 reads 0 times favorited 4 comments Add to Favorites Watch
« Part 6: Shop Evolution: Shop Tour Part 7 of Shop Upgrades series Part 8: Wall Track »

The past month I’ve been having a great email conversation with Dick Wynn (Wynn Environmental) as I continue to develop my design for my dust collection system. Rather than the typical HF modification kit that replaces the filter bag with a large canister, I’ve chosen to eliminate much of the standard hardware only using the blower and substituting a Oneida Super Dust Deputy and a Wynn 9L300NANO filter. This should give me a straighter airflow and better performance.

Adding to that conversation Dick and I are now discussing an added and different approach to improving the air quality in my shop. Rather than buying an off the shelf air filtration unit for a few $100 and hanging from the ceiling, I’m looking at building a sort of HVAC—less the heating—system that would collect air from under my workbenches, filter it to Merv15, then pump it out above my work areas. The benefit of such would be that instead of pulling dusty air from the ground and work area tops into my breathing space, I’ll have a downdraft sucking the dust away and a positive air pressure from the top pushing the dust down.

This is only in brainstorming territory at present, once I finish my primary dust collector system I’ll start experimenting on the shop downdraft idea to test out the viability of such. If it works it will be another tool in my shop to me healthy. —another bit of news one of my doctors, who specializes in respiratory aliments, is interested in what I’m doing so I’ll have yet another expert’s advice to consider.

While I will not likely document to the level of a Bill Pentz for these projects as I build and operate tem I’ll photograph & document the design and results to share.

For those wishing to ask questions I’ll do my best to answer. However, I’m not a Bill Pentz and don’t spend a lot of time researching the details in this area. Other than the designs I’m creating, I’ll likely point you to Bill Pentz, Steven Emmons, Stumpy Nubs, etc. websites.

-- bkseitz, Washington "if everything is going well, you've obviously overlooked something"

4 comments so far

View David Taylor's profile

David Taylor

326 posts in 508 days

#1 posted 01-06-2016 03:03 AM

Be interested in following your ideas. I am just finishing up building my shop, and hope to be tackling dust collection in the next couple of months I like your idea about the “HVAC-H” system of keeping the air clean.

Thanks for sharing.

-- Learn Relentlessly

View clin's profile


485 posts in 417 days

#2 posted 01-14-2016 08:18 PM

Interesting concept. I do wonder how much of the larger particles this may pickup, that might normally fall to the floor. Point being maybe a simple separator would still have value in terms of keeping the fine filter cleaner. but that is likely a problem to solve if it comes up.

In general I would think having a uniformly placed, overhead exhaust is more important than uniform intake. The reason being, the exhaust has momentum that even if there is not an intake directly below it, the air may still be forced to the floor. Obviously this depends on airflow speeds.

But heck, even, for example, 6 overhead exhausts vents and 6 floor intakes spread around the space, would have to be quite an improvement over a single ambient filter.

I’m looking forward seeing what you come up with.

-- Clin

View OldGuysRule's profile


130 posts in 394 days

#3 posted 02-07-2016 09:54 AM

BK, after looking closer at your drawing that is kind of what I had in mind for my shop. I still need to get the pictures taken of the squirrel cage fan I pulled out of that old heating unit.

Great minds think alike!! or Old Farts Stink Alike!! not sure how that should read.

Oh, I like your hat!! I’ve got some of the Old Guys Rule T-shirts.

-- Rod P.........OLD GUY......Learning new things!

View bkseitz's profile


293 posts in 731 days

#4 posted 02-08-2016 04:15 PM

@OldGuysRule, Old Guys Rule T-shirts cool! I’ll be getting back to shop projects next weekend—I hope. Had a WEP (Wife Emergency Project) last week. Two of her goats had babies and suddenly I have to make baby goat warmers out of 55 gal drums and heat lamps.

Picked up a magnetic snake lamp (Rockler) yesterday for the Band Saw on the way home from a conference. Works real good. I’m hoping to finish out track walls next weekend, then its onto the DC project and then the sanding table.

-- bkseitz, Washington "if everything is going well, you've obviously overlooked something"

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