[AT] respirators and Isocyanates (Urethane paint)

[John Wilkens]

Thanks Steve for the good painting suggestions!  I did fashion some 
heavy plastic curtains with gromets that fasten to the ceiling of my 
shop with heavy cup hooks behind one of the garage doors to paint in, 
but that was just to help keep the paint spray off of all the other 
stuff in the shop.   Works pretty good that way but concentrates the 
fumes where I paint!  Maybe I can redesign that a bit for fan and 
filters.   Couple questions:   Why not use shop air for an 
air-supplied mask if  sources away from the paint fumes and goes 
through the usual moisture filters and has no inline oil 
injector?  (Cost is a factor here).     Tell me about the Inter-Spiro 
units you mentioned. Is there one available for sale that would 
work?  I was looking at a half mask air-supplied respirator in the 
McMaster-Carr catalog (#5494T91) for $187 that might work OK for me 
if I wear a hat.   Thanks again for your help.  John Wilkens


At 10:39 PM 03/23/2008, Steve W. wrote:
>John Wilkens wrote:
> > Yeah, I've been thinking about doing something like that.  Trick is
> > keeping that dust down.  Gotta get those strong fumes away from me
> > though!   John
> >
>
>Well since you don't have a fancy spray booth, you could make a
>temporary booth pretty easy.
>Figure out a space large enough to do your painting. Now rig up a set of
>cables around that area. Then go buy some heavy duty clear plastic and
>some grommets. Make up some large curtains out of the plastic and string
>them up on the cables like a big shower curtain. Now on one side your
>going to make a frame out of 2X2 (or what ever). That frame will get
>attached to the plastic and it will hold a bunch of the cheap furnace
>filters. More is better. On the other side your going to make another
>frame to hold a couple large SLOW fans or you can use the cheap box fans
>with a router speed control to slow them down. This you want aimed so it
>vents outdoors. Now for you inside get a decent Air Supplied Respirator
>and you now have a booth that you can set up and take down as needed. I
>spent a total of 50 bucks on the first one I built.
>Of course you could also build a booth out of the clear PVC panels and
>use it as a greenhouse to start your garden...
>
>
>--
>Steve Williams
>Firefighter,EMT
>VanHornesville Vol. Fire Dept
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                    In the wide-open spaces of NE Oregon