Air Cleaner Design

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Blog entry by BuyoMasilla posted 02-13-2014 04:56 AM 1164 reads 0 times favorited 5 comments Add to Favorites Watch

Greetings Ladies and Gents,
I’ll try to avoid my bad habit of making a short story long as I want to be respectful of your time, want to capture your interest and hope to get your input.
My step son hooked me up with a furnace “squirrel cage” from some replacement job he did. The unit is very close to 17”X17”X17” again. The motor is not belt driven, and it is a 1/3 hp Lennox that can go some 17 hundred RPM, I think I read on the label. Not sure how that translates to CFM but I suspect it will be adequate to build a shop air cleaner unit.
There are many fine units in the annals of Lumberjocks. There also are great writings on the benefits and science behind them. For instance, Bob 42 educated me, maybe some of you as well, with his blog found under I also have had the opportunity to see first hand a unit built by my friend and fellow lumberjock Bert which is cited on this entry,, and can be seen in his projects page. The unit seen on this blog by J Wags, reflects what I want to do. Have my unit be a double duty, at least, and fill in as a table saw off feed table.
I found interesting the design Mr. Wags used. He showed great use of the rubber crutch foot (at least that’s what they look like to me) an item I’ve become close with as I recuperate from knee surgery. I also found interesting his choice of filters and the air intake design on his unit.
When reading about Mr. Wags’ shop air cleaner, I found an entry from Patron which prompt me to write him for advice. He suggested I pose my question to the entire LJ community in a blog which in turn will allow him to post some ideas into this entry, as I understand it.
Here’re some of my questions, would a plywood construction be strong enough to serve as an off feed table, or should I build it around a 2x frame? Any experience with reusable filters anyone? I think I would like to incorporate one in the project if possible and feasible. I think Mr. Wags used a cloth/triple bag one. My table saw is a contractor style a bit older Delta. I would like to build the table to fit between the arms where the fence ride to the right of the table. It would likely need “wings” to open and fit over the motor. How would you attach those.
I look forward to reading your thoughts, and looking at any design you might be able to upload with your replies. I thank you for your time to read this and for sharing your thoughts.
Mario, known here as Buyo Masilla

-- Dreaming of the day I might joint two pieces of wood square..........

5 comments so far

View Mauricio's profile


7163 posts in 3606 days

#1 posted 02-13-2014 05:29 AM

I made one out of an old blower with 2 furnace filters on each side. But after reading an article about them on Finewoodworking about air cleaners I dont have any confidence that they will take care of all the dangerous dust.

So, now I use it without the filters and just use it to exhaust dirty air outside the garage. I only use it when I’m making a lot of dust though which is not that often.

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View b2rtch's profile


4882 posts in 3503 days

#2 posted 02-13-2014 11:04 AM

You saw mine.

-- Bert

View patron's profile


13649 posts in 3796 days

#3 posted 02-16-2014 07:40 PM

seems to me that an air cleaner is just that
to filter the ambient dust in the air
making a router table/air cleaner unit
would put it close to the router and the dust from the table saw
clogging the filter quickly

as far as using it as a double duty (air filter/dust vacuum)
you would need to have some ‘dust deputy’ type of catch canister first
or your filters would get clogged quickly

moving the air cleaner higher up in the shop
would make it more effective for air born dust
the stuff that falls to the floor (from open table saw and router fling)
you will need to vacuum up separately anyway

a table saw / router dust pick-up
would need to be a dedicated vacuum for that
not the same as an air born dust cleaner

why not just make a router table box (on wheels if you like)
with drawers for router bits and sawblades
that can be moved to a drop table when needed
or a flip up drop table on the saw

two separate things

i think i understand what you are asking about
but think you may be stretching the way these two air vacuum’s work
trying to do both as one unit

hope this makes sense
if i am wrong
please let me know

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View BuyoMasilla's profile


104 posts in 3002 days

#4 posted 02-19-2014 01:28 AM

thanks everyone for your comments, Mauricio, I didn’t see your system in your projects, I’d be curious to check it out, I know your work is always top shelf.

Patron, you might have seen Bert’s he did put it off the floor and is placed on a side wall, circulates the air and is accessible. Nice combination.

JWags unit I still find intriguing and may try to copy. I’m afraid though that with my leg still recupping from surgery, it will be a while till I can get on the shop and make anything. Looking forward to it though.

Thanks again and catch you later. Mario

-- Dreaming of the day I might joint two pieces of wood square..........

View Mauricio's profile


7163 posts in 3606 days

#5 posted 02-19-2014 03:16 PM

Hey Mario, I dont have a pic of it, it was some of my earlier work before I was on LJ. I will try and remember to take one.

You might be interested in this post from Red on some nice washable filters. Custom sized and at a good price.

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

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