DIY air cleaner/filter - Page 2 - Woodworking Talk - Woodworkers Forum
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post #21 of 33 Old 07-26-2010, 06:20 AM
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I suggest a direct drive not belt drive, my belt drive bit the dust from long hours running. I made mine out of scrap plywood, made it to fit the same sixe pleated furnace filters for my home furnace so I only had to buy one size. I had 3 intake and one exhaust filter. Use a shop vac to clean them off. You can rotate them around to even out the life. I used mine with a cyclone seperator for a year as my make shift dust collecter until i was able to afford my Delta collecter. Its on caster and has as a slide top box on top with a stop at one end and a tight miter that is lubed with wax to make it slide easier but still seal. I also caulked all the seams.
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post #22 of 33 Old 09-08-2010, 11:24 PM
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DIY air cleaner

When using a blower motor you should restrict one sine of the blower housing or part of the outlet to put a load on the motor so it draws the proper amps..if not the motor will not be efficient and more that likely burn out before long by loading up the motor you will move more air you will see this by slowly closing off the outlet of the blower with a piece of plywood and you will feel the airflow increase dramatically. when you get the air is at its maximum flow you attach the plywood across the opening at that point
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post #23 of 33 Old 09-14-2010, 04:58 PM
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Quote:
Originally Posted by mikro4127 View Post
I used mine with a cyclone seperator for a year as my make shift dust collecter until i was able to afford my Delta collecter.
Mikro, I hemmed and hawed about woodcraft's recent online dust collector sale one day too long! (Boo hiss). I'm interested in doing that as my own temporary solution. Could you please post a pic or two? Thanks SteveEl
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post #24 of 33 Old 09-14-2010, 08:13 PM
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It is currently in storage and not here at home. but as soon as I get to the storage unit I will take some pics and post them.

Its a basic screwed together box, glued and caulked, rectangle openings at each end. The inward side at one time had a generic table saw dust hood screwed and sealed on it, so I could quick connect the hose. I rolled it up to the tool and the seperator. After I bought my delta at the wood working show, I took the hood off and used it as a room air cleaner especially for the small airborn dust etc. Worked like a charm! I got the direct drive motor for free with the squirrel cage from a furnace guy I know. It was an older one he salvaged from a furnace replacement. The filter seperation was simple 3/4" pine stock, made into frames and screwed in on base and sides. I wired a metal swtch box on the side and used extention cord and a plug to wire it all up.
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post #25 of 33 Old 09-14-2010, 09:04 PM
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I have been going to build a down flow sanding table. If you ran that while in the shop it seems logical to me that it would clean the air. Is there an error in my thinking?

Roger from the Great Horicon Swamp
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post #26 of 33 Old 09-14-2010, 09:12 PM
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Oh now i get it.... you're rig didn't do ambient air back when you used it as a work station dust collector, right? I was confused how you made it do both.

Thanks
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post #27 of 33 Old 09-16-2010, 08:08 AM
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I have been going to build a down flow sanding table. If you ran that while in the shop it seems logical to me that it would clean the air. Is there an error in my thinking?
No error at all burk, you could always combine a down draft table with a room air filter buy putting the filters on top with the intake area and down draft either out the back or bottom, depending on your squirrel cage configuration. I would use peg board on the intake side.
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post #28 of 33 Old 10-07-2010, 03:34 PM
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Homebrew supercheap air filter. Take one salvaged box fan, one 20x20x1 furnace filter, one bungee cord, one cheap timer. Mount fan using cleats between ceiling joists blowing up, bungee filter on front. Plug fan into timer and timer into wall set for 2 hours running time. Depending on quality of filter most of the real small stuff is dragged into the filter. Periodically remove filter and run a shop vac over it. It's not as good as real air filter, but for $10.00 it's not bad.
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post #29 of 33 Old 11-06-2010, 09:28 PM
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Originally Posted by Gene Howe View Post
I have a blower from my old furnace that I'd like to use in a box type air filter. Can anybody point me to plans or ideas about building such a unit?

I'd like to incorporate two furnace filters on the inlet side, if possible.
I'm looking into doing something similar to this, did you purchase normal furnace filters and cut and construct from there? How well did it work, was it easy to make?

Last edited by ecenur; 11-08-2010 at 12:06 PM.
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post #30 of 33 Old 11-07-2010, 12:09 PM
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All your looking to do is circulate the air in the shop and have it pass through the filter media. The finer the mesh the smaller the particle it traps. One could use those expensive HEPA filters, but the difference just using the cheapo filters was so profound that I stopped there. There is no need to over engineer this.
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post #31 of 33 Old 11-07-2010, 01:25 PM
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Air cleaner I built Pic

This is the one I built for my 20 x 32 work shop. I hung it on the wall opposite the double doors into my garage. I do have the whole article in PDF format if anyone wants it.
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post #32 of 33 Old 07-22-2011, 08:36 AM
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air cleaner intake

I have a prebuilt cabinet on wheels that I want to use. Does it matter if I place my intake on the side instead of the rear?

Last edited by craigstruzz; 07-22-2011 at 08:38 AM. Reason: typo
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post #33 of 33 Old 07-23-2011, 08:36 AM
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Re: Side filter

If it's movable, it shouldn't matter. Air flow should not be compromised too much (depending on your filter arrangment).
Portables are there to collect the dust from a certain machine and your not trying to clean the whole shop. Just be sure that you don't end up blowing other sawdust everywhere causing you to start inhaling it (you should wear a mask when it's on). You could face the exhaust vents up to keep from "cleaning" the floor.
Hope this helps. Pete

If ALL else fails, go by the numbers...
#1) find the directions....
#2) If found, then read the directions....
#3) Then pray they make sense
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