Air filtration Box

Way to go David
Cool filter box and nice shop too. well done

-- Jim from Heirloom Woodshop Southern Oregon

Thanks Jim.

-- David '65

Super duper air mover and cleaner… I need to do something similar in my very small sawdust room. I’m thinking duct tape 20” filter to a 20” box fan ought to do it. You guys have to get fancy and put us to shame. Well done. But, didn’t you for forget the stain and finish? A little molding around the the inlet/outlets? lol…

BTW: I assume the filters on on the inlet air flow side?

-- Al H. - small shop, small projects...

Congtrats, this is a well needed tool for any shop. My Jet works overtime to keep the shop clean.

-- Whether You Think You Can or You Think You Can't, YOU ARE RIGHT!!!

just finishing making my own. they have huge effect, especially when you sand and just blow off dust from surfaces. unfortunately blowers are not very common here (read: non existents) so I had to get a plate fan.

even before finishing the enclosure I couldn’t wait and run it while blowing the layers of dust that has accumulated on the shelves. the filter went dark after 1h and the air was very clear.

well done!

-- The woods are lovely, dark and deep, but I have promises to keep...

This project is right on time! I have a squirrel fan from my old furnace sitting in my shop waiting for me to make it a home. Your photos should get me in the right neighborhood! Thanks

Great looking air filter. I went by my local heat and air place a while back to ask if they had any extra….they had a stack of them…told me to take my pick for free.

-- Don S.E. OK

Looks to be a powerful system. My shop-made filtration system doesn’t get used during summer time because I work with the garage door open. In the winter time (easily – 10 to – 15 C cold), I work with a portable propane tank heater with the door closed and that’s when I turn on my air cleaner. can’t tell from your photos – are you using more than one layer of air filters? I followed the design recommended in some articles: 1 on the intake side and two on the outtake.

-- The time I enjoy wasting is not time wasted

Wow a clever design I am designing a similar one myself with 2 squirrel fans and a couple of truck circular air filters. I will get it done soon I promise. PS I love yours and glad to see you did your own thing very sucessfully by all accounts rather than purchasing one from off the shelf Kindest regards .Alistair

-- excuse my typing as I have a form of parkinsons disease

Chuck, what I used on the intake was two (2) 4”thick x 20”wide & 20” tall pleated box filters this gives me more surface cleaning on the filtration with the same static pressure inside the box not to put strain on the motor.

Alistair, thank you the end cost was only a couple of bucks the motor and plywood was given to me so the only thing I actually purchased was a wire connector I didn’t have in the shop. So purchasing one for $300 – $400 hum lets see…

-- David '65

I built one years ago for my then large shop. I was back to my home town a few weeks ago, and pulled mine out of storage, wanting to bring it to my new shop, but I couldn’t fit it in the car with the luggage and family.

SWMBO told me I couldn’t leave our daughter behind, even if I wanted the air filter!!!

Anyway, just as a note, since the air unit is always mounted up high, I placed my switch on the bottom of the unit, easily reachable from the floor, even for a short dude like me.

Oh and my creation is certainly not as nice as yours … great job!

Just a last question … how are the filters secured in the box? I can’t see anything holding them in place in the pics.

-- "The German is like a willow. No matter which way you bend him, he will always take root again." - Alexander Solzhenitsyn -

Well since wood sounds weird I’ll say Chuck, the filters are 4” thick so there is nothing holding them in no need for anything. I thought long (about 2 seconds) about something then I forgot what I was thinking about (not) it just doesn’t need anything. If I ever go to a smaller size filter I guess will haft to come up with something.

-- David '65