[TheForge] positive pressure room

[Jay Hayes]

Mikey,
Equipment manufacturers are don't build an all in one booth because dirt 
and sparks don't mix with spray painting. Every code that I'm aware of 
mandates that the two operations be segregated. Even the fans and duct 
work must be separate from each other. Aside from the obvious fire 
hazard, over spray would bond with any grit and dirt to make cleanup a bear.

I'm fortunate to have a big shop now, but even when I had a tiny space, 
I always kept the paint away from other operations, some times in a 
separate building. But like you say inhalants are bad news. Proper 
ventilation and personal protection is a must.

Jay

> As all old timers know, metal fumes, grinding particulates, and spray painting
> inhalants are the main causes of ill health among metal workers. It seems to me
> that a booth configured to deal with all of them would be a boon for us.
> Naturally, equipment manufacturers have no interest in reducing their potential
> markets by producing universal tooling, so such an item can only be home built.
> Any thoughts on the matter?
> Mikey 
>
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net [mailto:theforge-bounces at mailman.qth.net]
> On Behalf Of Jay Hayes
> Sent: Thursday, March 08, 2007 5:14 PM
> To: Sponsored by ABANA
> Subject: Re: [TheForge] positive pressure room
>
> Mikey,
> That is correct. The heavier the particulate is the higher the velocity the air
> needs to be to move it. The paint booth I turned into a grinding room is a large
> twelve foot wide walk in type booth with a 36 inch explosion proof fan. We
> reconfigured the filter bank with baffles to increase the down draft velocity.
> It's sweet and helps keep most of the grit and dirt out of the main part of the
> shop. Our old sanding / grinding room was a Binks 22 x 30 booth with a 16 foot
> down draft bench on one wall and two six foot down draft benches on another
> wall. It was great for small stuff but was only fair for large items like
> railings or spiral stairs. The new setup is more versatile and better utilizes
> space.
>
> Jay
>
> Kathy wrote:
>   
>> Hi Jay,
>> I always thought the rule of thumb was that to move fumes you want 
>> high volume fans, but to move particulates (like grinder dust) you need high
>>     
> speed fans.
>   
>> Since paint involves both, what kind of machinery do you employ? BTW, 
>> thanks again for your contributions about handling copper tubing 
>> fittings in Gas Burners.
>> Mikey_
>>
>>   
>>     
>
> _______________________________________________
> Manage membership or unsubscribe at:
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  blacksmithblacksmith at hotmail.com
> password:  anvil
> ___________
>
>
>
>
> _______________________________________________
> Manage membership or unsubscribe at:
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  blacksmithblacksmith at hotmail.com
> password:  anvil
> ___________
>
>
>
>