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This is my homemade air filter!
I used a 20" three speed fan from walmart $15
and a 20" x 20" heater dust filter from walmart $4
So for just over $20 i made a simple but effective
air filter. i suggest you blow the filter out every hour
if your doing a lot of heavy sanding or cutting.

As soon as I save up the money I will be upgrading to a more
better quality air filtration system from Grizzly.

Thank you for looking and comments or questions are welcome!
David B.

Gallery

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cool & inexpensive
 

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7,502 Posts
it works. I've got one hanging from the ceiling, and one at the lathe. just sweep em or blow em out when needed. they work. I had a few pieces of vinyl J-Channel layin around that I used to hold the filter/s. I think every little bit surely helps. Actually, this pic was right before I cleaned it.
Oh, I bought the box fans at Dollar Store for 10bux each
 

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Very cool. I need to make of these. I have the fan but I needed a way to make the box for it. I could be ultra cheap and just bungee chord a 20"x20" filter to it but I like the look of yours.
 

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I've seen LOTS of the home-brewed 20" shop fan + filter rigs (just like Doug describes, and like I use), but NEVER one that got boxed and framed the way that you did yours.

Clever. Elegant. Nice !

To your health :)
 

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1,243 Posts
Nice job. I like that frame.
I have one too and it suits me fine.
 

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Before you jump to that grizzly you might want to try upgrading the fiter to on this one. I use a similar setup and bought a $25 re-usable filter about a year ago. It works well enough that I can't fine a meaningful performance difference in something that cost alot more and if the fan goes I'm only out another $15 bucks.

M2cents
Jon
 
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