Workshop air Filter

[Darley]

Does any one have build is own Workshop air filter? any idea or how to build one, how many CFM should I run for it? thanks for the help

 

[maxwell_smart007]

I made a floor standing one that uses a squirrel cage fan and furnace filters to clean the air...

I'll get you some pictures tomrorow if you like!

 

[Glass Scratcher]

It would be cool to see.

 

[MDWine]

Here's one, might serve your needs. I think WOOD magazine had an article in the last year, not quite sure tho...

http://decoysbyfrank.com/Tips & Techniques Dust Box.htm

 

[Darley]

Thanks Michael, Andrew would be nice to see some photos Thanks

 

[bradh]

This is a dust collector, not an air filter:
http://www.hardingpens.com/workshop-dc.html

 

[TowMater]

I made one out of 2 "muffin fans" used in server cabinets, I bought them on Ebay for next to nothing and they move 600cfm per fan.

If I knew how to post pictures here I'd put a couple up.....

It's got two filters on the intake side and one filter on the clean air side.

Took a grand total of 2 hours to make maybe???

My shop is 21X24 with 9' ceilings and I'd say it cleans the air in there in about 5 minutes (visible dust particles).

 

[Randy_]

Originally posted by bradh
<br />This is a dust collector, not an air filter:
http://www.hardingpens.com/workshop-dc.html

Is that DC of your own design or did you get the plan from a commercial source. It looks a lot like a project I saw in one of the woodworking magazines; but I can't remember which one.

Do you know what the CFM rating is of your fan at high speed?

 

[bradh]

Is that DC of your own design or did you get the plan from a commercial source. It looks a lot like a project I saw in one of the woodworking magazines; but I can't remember which one.

Do you know what the CFM rating is of your fan at high speed?

I designed this one myself. I wanted to use some old parts I had, wanted something quiet that did not take much floor space.
I don't know the CFM it flows, but it does the job very well.
Brad

 

[ahoiberg]

like maxwell, i made one with a squirrel cage fan mounted inside a plywood box i build around it. i put 3 filters in the intake side (two cheapos and once nice filtrete HEPA one) and just cut a hole under the exhaust part of the fan. i sealed the box with silicone sealant and it's not the world's most fancy unit but it does move a ton of air.

as soon as i get my new shop set up, I'll install some eye bolts in the top and hang it from the ceiling... right now it serves as an extra table in my temporary shop []

i'll try to post some pictures of mine also.

 

[WWAtty]

I built one using an attic fan from Home Despot and good (e.g., Filtrete) furnace filters. Later I cannibalized the parts, added a second attic fan and built a bigger one that filters about 3000CFM. It draws air in from the sides and exhausts cleaned air out the top. I suspended it from the ceiling with chain and it removes a good portion of airborne dust. It gives the added benefit of constantly circulating air in my shop, which is helpful when I run the heater.
http://users.goldengate.net/~kbrady/DustCollection.html

Cheers.

 

[Darley]

Originally posted by WWAtty
<br />I built one using an attic fan from Home Despot and good (e.g., Filtrete) furnace filters. Later I cannibalized the parts, added a second attic fan and built a bigger one that filters about 3000CFM. It draws air in from the sides and exhausts cleaned air out the top. I suspended it from the ceiling with chain and it removes a good portion of airborne dust. It gives the added benefit of constantly circulating air in my shop, which is helpful when I run the heater.
http://users.goldengate.net/~kbrady/DustCollection.html

Cheers.

Kevin this is a good one thanks for your input hope will help other poeple to

 

[maxwell_smart007]

Sorry guys, I completely forgot about taking pictures of my setup! It's actually very, very similar to Kevin's (Spookily, actually), but with less refinement, and a squirrel cage blower and motor from an old furnace.

I also mounted the filters at the top of the structure - just below the pegboard top, so that my motor doesn't get clogged with dust....

Since these pictures, I've added a strip around the outside to attach clamps to...I sometimes lay a strip of that carpet underlay if I'm using it to hold an item for my router or when I'm sanding...

 

[WWAtty]

I'm now in the process of building a small downdraft table that will attach to my DC. Basically a plywood box, about 24" wide x 30" long x 6" high. Crude downloadable sketches available here:
http://users.goldengate.net/~kbrady/downdraftbox.pdf

I planned to use pegboard for the top (as Maxwell has shown above). While at Lowe's the other day, I saw that they stock a plastic version of pegboard - 1/4" thick, with 1/4" dia. holes spaced at 1" intervals. Something like this: http://www.hookstore.com/panels.htm
I picked up a 24" x 48" sheet. However, the plastic pegboard is not quite as rigid as I had wanted when placed horizontally, so I must build in some thin plywood "joists" to add support to minimize sagging.

I figure roughly $30 in materials, and an afternoon to build it (as soon as I HAVE an afternoon free to do it). I'll keep you posted on how it works out when I finish building it...

Cheers.