DIY fume extractor.

rkidd · Mar 28, 2018

downsizingnow48 said:
I'm wondering if it is feasible to have the duct go to a filter box rather than outside, to remove the dust and fumes, and recirculate the air instead of pumping heat to the outdoors.

I dont think for what I am doing that is feasible. First time I used it , I cracked the window on the opposite side with the exhaust fan on, it was 30 degrees out and my shop stayed right at temp without the heater running way more than normal. It worked out really well for me.

PILOON · Mar 28, 2018

I agree with many comments but to remove (contaminated air) you have to replace it. Simple.
If you don't want cold air then you need to pre heat it before replacing it.
That or wear a warm coat while running the fan or whatever. (or wait 'til spring to paint outdoors).
It is like for every action there is a reaction.

grsthegreat · Mar 28, 2018

i put a greenhouse style vent fan in my shop. way overkill but since i do welding and plasma cutting in there i went overboard. its 240 volt with self opening louvers. mind you it moves 2,000 CFM. i can swap out air pretty fast. i also have a Hobbyair mask system i wear when welding or painting. this provides me with fresh outside air to breath.

ive made my shop pretty stinky at times. i love the fact that in 5-8 minutes all smells are gone mines a 30x40x14 tall shop.

pgk · Apr 2, 2018

Wow, 2000cfm without air make up I would think that would backdraft your furnace in your shop?

grsthegreat · Apr 2, 2018

pgk said:
Wow, 2000cfm without air make up I would think that would backdraft your furnace in your shop?

i leave the man door open and lift the roll up door a few inches. no backdraft.

pgk · Apr 6, 2018

Opening a door will do the trick, my parents had a house back in the 60's with one of those fans mounted up in the ceiling, amazing how much air that would draw. On a summer evening once the temp dropped below the temp in the house you could cool the whole house down in minutes..

Pete

tjkubota93 · Apr 6, 2018

Be careful painting, I bet it will discolor your siding around the vent.
I like the setup.

rkidd · Apr 8, 2018

tjkubota93 said:
Be careful painting, I bet it will discolor your siding around the vent.
I like the setup.

I am sure you are right about the painting. I have no plans of painting inside with it. Just too messy inside and would have to get a filter to try and protect the fan. It works well and dont want to screw it up trying to paint. Will have to wait for better days to get outside to do painting for the big stuff. Most of the small stuff I fab and paint, I make sure the piece is warm so I can then take it outside, shoot it, and take it right back in to dry. Has worked out great for the small stuff.