Air Filtration System

Nice! How did you handle the exhaust? Does it just run out a slot in the 4th side? Would love to see one more photo of that face. Thanks for posting!

-- Tom Peterson, Omaha, NE

Nice solution to a dusty problem, but I am a little confused like BaloonGuy, not sure how this circulates the air and where the dust is trapped.

-- "I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The point is to bring them the real facts." - Abraham Lincoln

The exhaust does exit through a slot on the back side that is not visible.

My filters get jammed up quickly. I would recommend putting a super cheap coarse filter in front of the finer filters. That seems to help quite a bit

-- https://pinepointwoodworks.wordpress.com/

Great idea a very creative approach
I just box a Jet one, very noisy :(

Jamie

-- Who is the happiest of men? He who values the merits of others, and in their pleasure takes joy, even as though 'twere his own. --Johann Wolfgang von Goethe

Great idea! Now I have a use for the box of filters someone gave me!!

-- Measure twice and try not to cut your thumbs off!

As far as circulation is concerned, there is very little loss of circulation due to the three filters pulling from different directions, if that is what you were thinking.

Reason being that a fan will blow air 27 times farther than it will suck it. Almost all the circulation that happens with any room air filter is due to the direction and velocity of the air coming out of the discharge.

If you had a single filter sucking air out of a smoke filled room you would see a spherical area of air moving toward the filter from all directions. Not much different with three filters. Where you would see a strong flow traveling in a straight line across the room would be where the air leaves the fan.

crank49
Thanks for your help on this. It works really well.

Nice looking air cleaner/filtration system.
If anyone is looking for squirrel cage fans, just locate a heating contractor. Yes, they throw the old furnaces in the trash, and with their permission, you can pull a blower in 2-3 minutes by removing about 3 screws.
Oh ya….....and the best part is, they are free.

Very cool, I hope it serves you a long time.

How loud is it? I want to make mine with a 3 speed switch. I like it a lot. The dust you can’t see is the most harmful to our lungs.

-- Narinder, Calgary, Ab. http://www.trimandcraft.ca/

”How loud is it? I want to make mine with a 3 speed switch. I like it a lot. The dust you can’t see is the most harmful to our lungs.”

It isn’t bad at all. The box eliminates a lot of the noise. You do hear some rushing air, but it isn’t as loud as my central dust collector system.

very cool! Looks like I’m on a pawn shop hunt this weekend.

-- Steve