[AT] respirators and Isocyanates (Urethane paint)

[John Wilkens]

Ahh...more good ideas!   These will require more study on my 
part.  Sure like the idea of low cost!   Don't know though about the 
motorcycle helmet.  I spent a lot of hours inside a snowmobile helmet 
with the Forest Service during the winters and was always relieved to 
get the thing off my head!  Thanks for the ideas!     I hope everyone 
painting old tractors with catalyzed paint is aware of the dangers of 
isocyanates!  I never paid much attention until I switched to acrylic 
urethane and started feeling a little funny.     Lots of info on the 
web.   John



At 02:40 PM 03/24/2008, you wrote:
>Hi John:
>
>         Personally I think this discussion took a wrong turn 
> somewhere and is
>now caught in a "compressor rut"... Why would you want to move breathing
>air with a compressor? This is painting not SCUBA diving. Would you move
>air in your furnace with a compressor? You don't need pressure, you do
>need a little volume. You certainly don't need compressor noise in your
>ears.
>         I have looked at this stuff for some time for painting and 
> wood lathe
>use both. You want to use the KISS system on this stuff or have a lot of
>$$$$. I have a small 140 CFM squirrel cage blower (about like this)
>http://www.grainger.com/Grainger/items/2C915
>   that I want to use to pull air from completely outside of the area
>where fumes or dust are and maybe have its inlet fed by a hose who's end
>is "well" out of the area. The inlet hose could be simply cheap black
>polyethylene corrugated drain tile (the unslotted kind), 3" or 4" inch
>either one should work. Put some kind of screen on the intake, you don't
>want a freshly blown yellow jacket in your helmet with you...
>:-)
>Go buy a yard-sale motorcycle helmet with a front shield and drill a
>mounting hole for the feed hose in the back so that the air will be
>pushed up over the top and sides of your head and will of course exit
>mostly out the lower front. The feed from the blower to the helmet could
>be light weight common plastic vacuum cleaner hose. You can buy it as
>replacement hose for central vacs in longer lengths. Don't buy the heavy
>stuff, the really light stuff will work fine and be much easier to manage.
>         The part that requires being a little creative is the 
> attachment of the
>hose to the helmet. You don't want it sticking straight out the back and
>pulling on you while you work.
>         Pick a helmet that has a front lens that you can walk in 
> about anywhere
>and buy off of the shelf. You will need to replace it now and then.
>Don't buy the helmet too small you want a little room and you probably
>won't crash while painting anyway...
>:-)
>         That is my version of a low cost system...
>
>
>
>--
>
>
>"farmer"
>
>
>I now have one more email list - "Budget_Solar"
>http://groups.yahoo.com/group/budget_solar
>
>
>Francis Robinson
>Central Indiana, USA
>robinson at svs.net
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                    In the wide-open spaces of NE Oregon