Breathe in...Breathe out

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Project by WoodChips_Mac posted 02-17-2013 08:12 PM 3956 views 14 times favorited 29 comments Add to Favorites Watch

Why pay $300+ for something you can build yourself. I built this air cleaner for around $60. I already had the lumber and got the blower for free. The filters are 20×25, so that’d what size the box is also. If you plan to build one of these make sure to get the filters first and then build the box around them….much easier than trying to find filters to fit your box. On the intake side i have a 1” filter followed by a 4” filter and then on the output side i have a 1” filter. There is a 3/4” piece of MDF between each filter. The 4” filter is a MERV 12 filter and is effective to .3 microns. It’s also pretty expensive (for an air filter), $32, so that’s why I have a 1” filter in front of it…my hope is that the 1” will get a good portion of the dust and the 4” will get the rest but wont get used up too fast. I just finished so i haven’t used it yet except to test that it works. I have a remote for it since it will be hung from the ceiling and I have 10’ ceilings i need to be able to turn it on and off with ease.

Its not going to win any design contests but it works. :)

Thanks for looking.

I added a divider inside to separate the intake from the output. i didnt measure the airflow before i did that so i am not sure if there was any performance inhancement. I cant imagine there not being any improvement since it cant suck in air from the output side.

-- "Still Learning"

29 comments so far

View jeff_wenz's profile


152 posts in 4609 days

#1 posted 02-17-2013 08:20 PM

What type of electrical remote did you use?

-- Jeff, North Carolina

View WoodChips_Mac's profile


90 posts in 3190 days

#2 posted 02-17-2013 08:32 PM

Its a Westek Outdoor Wireless Remote….made for exterior lights. it was $15 at Home Depot. only $4 more than buying the components for the pull chain mechanism.

-- "Still Learning"

View SteveW's profile


397 posts in 3918 days

#3 posted 02-17-2013 08:38 PM

Nice work, you’ll be glad you have it when you’re creating sawdust…
I have a similar one too, and it works on the same principles as well…

-- On the eighth day God was back in His woodworking shop! SteveW

View WoodChips_Mac's profile


90 posts in 3190 days

#4 posted 02-17-2013 08:41 PM

i like the idea of the sanding table on top of it….thats an option. being that mine weighs 75 – 80 lbs i wasnt looking forward to trying to hang it from the ceiling securely.

-- "Still Learning"

View RVroman's profile


163 posts in 3083 days

#5 posted 02-17-2013 08:48 PM

Nicely done. I have been considering doing something like this as well. One question though, my thought was to have the intake filters right in front of the cage, and then the output filters in front of the output. Basically the filters would be 90 degrees to each other. Does having the intake filters behind the motor affect CFM?

Also, what does anyone think about using this style blower for such a project?

-- Robert --- making toothpicks one 3x3x12 blank at a time!

View WoodChips_Mac's profile


90 posts in 3190 days

#6 posted 02-17-2013 08:51 PM

I’m not sure what the CFM is on this blower since it was free and its old. when i tested it the output still seemed strong….only time will tell i guess.

-- "Still Learning"

View johnintecumseh's profile


127 posts in 4476 days

#7 posted 02-17-2013 09:15 PM

I have a similar tube blower. It has a foam pre-filter and a cone shape fuzzy filter inside, both in front of the blade. I can see the colour of the wood on the foam after only a couple minutes. Filters should be in front of the blade to protect the motor. I will try a piece of ‘filtrete’ with the foam and also instead . Do you guys think ” filtrete” material slows down the intake ?? keep smiling John

-- retired and smiling

View a1Jim's profile


118161 posts in 4636 days

#8 posted 02-17-2013 09:37 PM

View ldl's profile


1135 posts in 3424 days

#9 posted 02-17-2013 11:44 PM

I built one similar and got the fan unit from a A/C friend of mine. He told me it was 220 so I wired it 220. When I plugged it in it started up and then made a loud pop and quit. I think my friend lied and it is 110. Got to go back and get another fan unit from him. Course they were free so no cost to me so far.

-- Dewayne in Bainbridge, Ga. - - No one can make you mad. Only you decide when you get mad - -

View RogerInColorado's profile


321 posts in 3014 days

#10 posted 02-18-2013 12:34 AM

Cool project. Is there any reason that this remote couldn’t be used to control a 120 vac dust collector?

View WoodChips_Mac's profile


90 posts in 3190 days

#11 posted 02-18-2013 01:42 AM

no reason whatsoever….plug in what you want it to control into the end of it and plug the controller into the wall and your set.

-- "Still Learning"

View jeff_wenz's profile


152 posts in 4609 days

#12 posted 02-18-2013 02:14 AM

I’m curious how smooth or rough it vibrates when it is suspended. Let us know. Did you try to balance the motor inside the box at all?

-- Jeff, North Carolina

View taoist's profile


124 posts in 3550 days

#13 posted 02-18-2013 02:33 AM

You did a great job on the construction of the cabinet. Nice work…I do have a question about the air flow though. It seems to me that it would be easier for air to be sucked into the box on the output side rather than on the side with the 4” filter and 1” filter. Have you taken a lighted cigarette or some fireworks punk to check the air flow on both sides of the box ? It just seems that air would take the route of less resistance to the blower.

View Dwayne's profile


28 posts in 3206 days

#14 posted 02-18-2013 02:57 AM

This has been on my to build list for 8 months. From ones I have seen build, plans, and youtubers I have not seen a filter on the exhaust side. Also with out the box having a divider to ensure your intake is pulling in and not recycling the air inside the box. With more resistance on the exhaust then the intake may cause some issues. Search it on YouTube a guy has a good video and he works with HVAC for a living.

View WoodChips_Mac's profile


90 posts in 3190 days

#15 posted 02-18-2013 03:10 AM

Jeff…it has rubber feet…this thing is super quiet.

taoist…with the amount of air being pushed out of the output, i dont see how it could pull air in that way…i could be wrong. i have not tried the smoke test since i have no way of making smoke as of yet. i did notice when i had it turned on that the filter on the output was being pushed out with the air being pushed through it.

Dwayne….not sure i understand the divider. the point of the filter on the output side is to further catch any particles missed by the other filters, there by making it even more of an air cleaner.

-- "Still Learning"

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