[BC] brazing

[Kevin C. Kidd]

I made myself very very sick in high school agriculture class practicing 
brazing on galvanized sheet metal.  We were in a welding booth but didn't 
turn the ventilation fans on.  About 2 hours after inhaling burning zinc 
fumes for several minutes I was down and out.  Out of school for almost a 
week with severe flu like symptoms.  In later life I have accidentally 
welded or brazed galvanized metal OUTSIDE WITH A BREEZE BLOWING and an hour 
or so later be a little nauseated with a headache.

If you are welding or brazing and see yellowish white smoke and a yellowish 
or white residue around the outside edge of the heated area, you are 
heating galvanized material and should use special precautions.




At 10:05 PM 5/23/2005, you wrote:
>On Monday 23 May 2005 08:08, JYRussell at academicplanet.com wrote:
> > But do remember that wonderful zinc smoke from the galv is NOT good for
> > you. (arc weld seams inside a galv tank for a while.... that'll teach ya.)
>
>  Most assuredly it is not, and I'ld not do it in a closed environment without
>  adequate ventilation, but it sure does make the soldering easier.
>
>  ( I like to share the aroma of my endevors with the great outdoors. )
>  :-)
>
>
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-- 

Kevin Kidd, CSRE
WD4RAT
mailto:kkidd at kkbc.com

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