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Fume extractor

Posted: Fri Mar 14, 2014 11:53 pm
by gundog
Is there a fume extractor that is affordable for a home shop. Has anyone made a fume extractor? Looking to find something to help with smoke in my small 900 foot shop.

Re: Fume extractor

Posted: Sat Mar 15, 2014 2:34 am
by weldin mike 27
http://www.ebay.com.au/sch/i.html?_from ... 1&_ipg=200

Have a look here, this will give you a idea of where to start.

Mick

Re: Fume extractor

Posted: Sat Mar 15, 2014 7:28 pm
by gundog
Thanks mike I did check out ebay. I was hoping for a diy or a cheap version. I just do not understand why they are so much money.

Re: Fume extractor

Posted: Sat Mar 15, 2014 8:25 pm
by RichardH
Check out this thread:
http://forum.weldingtipsandtricks.com/v ... =20#p26693

Instead of worrying about filtering and recirculating the fumes, how about just venting them outside?

Cheers,
Richard

Re: Fume extractor

Posted: Sat Mar 15, 2014 10:52 pm
by Superiorwelding
Gundog,
I am putting pieces together to make a fume extractor that will simply vent outside
I started a thread in the metal cutting section and will be posting progress there. I also will be building a down draft table, when I get some free time set aside.
I do not feel that you would spend a whole lot of money if you have the skills to make one and don't need the fancies that come on the real ones.
Below us a fan that I think I will use in the hood.
-Jonathan

Re: Fume extractor

Posted: Sat Mar 15, 2014 11:21 pm
by gundog
My spidy senses are tingling. I was thinking along the same way. Not really sure about venting outside in the 40 below winter temps. Air recovery in the shop might be a issue. Your fan and some heap filters a little r&d presto one filter air sucker. I will have to put my thinking cap on trouble is no time. still would like to find a taylor made one but will fab if needed.

Re: Fume extractor

Posted: Sun Mar 16, 2014 12:38 am
by weldin mike 27
Hey,

Its a sellers market i suppose. lol. You can buy a fan that has spring loaded shutters on it so when its not in use they snap shut. Common it bathrooms.

Mick

Re: Fume extractor

Posted: Sun Mar 16, 2014 9:28 am
by Superiorwelding
Gundog
If you are wanting to purchase a kit, give me a week and will have one drawn up ready to sell :D
-Jonathan

Re: Fume extractor

Posted: Sun Mar 16, 2014 9:49 pm
by power
Gundog, Here is a little fan I put together for small jobs in the shop so I didn't have to fire up the large exhaust fan in the shop. Bathroom fan, screen, light switch, used 3in hd dryer vent hose about 20ft long works good. I just put it together to help when the temp was -30 so not to lose much heat.

Re: Fume extractor

Posted: Sun Mar 16, 2014 10:37 pm
by gundog
Power do you think a house filter one of the good ones would cut down on smoke in the shop. I was thinking of something like you have then filter it to help out.

Re: Fume extractor

Posted: Mon Mar 17, 2014 11:33 am
by Otto Nobedder
A HEPA filter will do great at eliminating "smoke" (particulates), but not "fumes", like metal vapors and excess levels of inert gasses. The best path to eliminating the hazards is to vent outside. For that - 40* make-up air, I'd use the same path for exhaust, through a heat-exchanger. There are products made for this purpose to recover heat lost up the flue of furnaces and water heaters into the make-up air that could be adapted to a fume extractor.

Steve S