Air filter

Nice! I like your use of the space between the rafters. I vote for poly, but I’m lazy about some things!

-- Now, where did I put those bandaids?

I need to build one of these. I especially appreciate your use of exacting mathematics to figure your collectors capabilities. I am always crunching numbers in my head, sometimes to a fault.

-- "That Government is Best that Governs The Least."-Jefferson

Nice job. I have also built my own air cleaner and use it every time I go into the shop.

It’s nice to know you can build your own equal or better than what you can buy.

Nice looking setup.

-- What happens in the workshop stays in the workshop. No wait that doesn't sound right. Karson Southern Delaware karson_morrison@bigfoot.com †

great job well done

-- Jim from Heirloom Woodshop Southern Oregon

Looks really nice! I, too, like your use of the space between the joists – very clever. You may want to seal the joints with some caulk on the inside to make sure all the “dirty” air goes through the filters and not through cracks.

-- Anything is possible when you don't know what you're talking about.

That will really help with the fine dust…...good job.

-- I will just keep doing it till I get it right.

Now that’s using your head AKA head room. I have been trying t build one but I am having a hard time finding an inexpensive fan set up. What I have seen cost about as much as a new set up any advice?.

-- David '65

David, (Sorry, Pirate, to clutter up your thread),
I recently built a filter similar to this (in my projects if you’re interested) and used a blower from an clothes dryer I got for FREE at my local appliance outlet. He had a big pile of scrap appliances that he had removed and let me use my tools to pull whatever I wanted. Clothes dryer blowers move about 300-400cfm so they are good for a small shop like The Pirates. Happy hunting.

-- Anything is possible when you don't know what you're talking about.

David65,
Another source for free blowers would be heating contractors. They really don’t want the old furnaces they pull out and usually call a scrap metal person to come haul them away. Call around and I bet someone would be more than happy to let you pull one for yourself.

I mostly decided to purchase mine (for about $80) since it came with a 4” intake port. The hope being that 180 CFM would work for the air filter. Plan B being the blower gets re-purposed to dust collection around the mitre and (future) radial arm saws. Since I would be purchasing/making a smaller dust collector the small blower would act as an inline booster. Plus I wanted the longest possible life in the blower so I don’t have to rebuild it anytime soon.

-- P.O.C.

Very well done I like this idea again back to my question again whay pay big money for these when you can make exactly the same thing yourself. I built my own a few years ago with double fans similar to yours it does a great job of clearing the dusty air from the shop I was given two very nice squirell cage fans and intend to build another one these fans are abit bigger and I will have it over the other side of the room.Alistair

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

Well designed. Where did you purchase your $80 blower from? Thanks.