[TheForge] positive pressure room

[Kathy]

Jerry,
You forgot to include bugs. Spray paint seems to act like a magnet for flying
wrigglers determined to commit bugicide in the middle of a perfect paint job.:-)

Mikey

-----Original Message-----
From: theforge-bounces at mailman.qth.net [mailto:theforge-bounces at mailman.qth.net]
On Behalf Of wmullett at bright.net
Sent: Sunday, March 11, 2007 3:02 PM
To: Sponsored by ABANA
Subject: Re: Re: [TheForge] positive pressure room

I'll say this again - You don't want a positive pressure room for grinding.  You
want negative pressure caused by your collection system.  

Do you really want your dust blowing out into your shop?  Paint booths are
completely different because you don't want dust coming into the room.

From: "Jerry Frost" <frosty at customcpu.com>
Date: Sun Mar 11, 3:07 PM
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Subject: Re: [TheForge] positive pressure room

I only have a couple things to add to the thread, most 
has been covered pretty well.

If you set up a dust collector system be very careful 
what kinds of grinding dust you mix in it, some make 
pretty flamable mixtures.

If you have a swamp cooler available it'll make a 
superb filter. The water flowing over the humidifying 
mats will remove most everything from the air. You 
might have to turn up the water supply a bit to get a 
good water curtain.

The only downside to a positive pressure room is if 
there's a leak to the rest of the shop, it'll blow 
dust, fumes, etc. into the shop as or more easily as it 
will through the filters.

I've planned a "clean" room in my shop to keep the 
welding, grinding, smithin crud off my machine tools, 
etc.

For the exhaust system in the shop I laid an underfloor 
grid of 3" PVC pipe with 2" receiver tubes on a 2' 
grid. The receiver tubes will be floor anchors, tool 
post mounts, exhaust ports and whatever else fits.

Frosty
-------------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.

http://www.artmetalradio.com/

From: "Dan Scheid" <damales at Pollybutte.net>


> Well I get to build a shop. It's going to be 24'X36' 
> and I'm thinking of
> making a "grind" room with a positive pressure to try 
> to get the dust out.
> My thoughts was to pipe a old swamp cooler in and 
> vent it out from under the
> grinder. Do I need to put a blower on the out? Any 
> input to make this work.
> Cheep.
> Thanks
> Dan Scheid
>

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