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March 1999

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Subject:
From:
"Stephen R. Gregory" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 11 Mar 1999 23:49:05 EST
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n a message dated 3/11/99 6:10:15 PM Pacific Standard Time,
[log in to unmask] writes:

> Steve after the 3 days you spent in your wave solder machine you
>  probably just need to spit on it to turn it red. :}
>
>  -Russ
>
>  My personal opinion is no soldering station should be without a fume
>  extraction system.  Personally I love the smell of burnt flux.  It means
>  were makin money. (and I got enough kids)

Hi Russ...

    Yeah, these past few days I would say I've probably got my daily FDA
requirement of lead additives, but I'm pretty good about washing my hands
every single time after working on it before I eat or smoke. That darn old
conveyer chain lube you wear for days though...unless you wanna get some Comet
and take a couple of layers of skin off..  |:>(

    I also do my de-drossing in the evening AFTER everybody else has left,
WITH my face filter on...bad part about doing it late like that is that my
breath isn't the normal sweet scent of ambrosia that it is in the morning..
(:>D  (you learn that real quick when you put a face mask on!)

    One thing I remembered to do when I had the ducting for the wave exhaust
installed back when we opened up 'bout a year ago, was to run a short length
of duct off to one side of the main duct at the exit end, and had a hood made
a little bigger than the solder pot.

    When you crank the pot out the hood is right above the pot. I had them put
a butterfly valve in the main duct just below where I put the short section. I
could close it and divert all the suck to the solder pot hood.

    When I'm de-drossing I see can any dust generated go right up the
exhaust...so I'm not spreading it all over the production floor...let the
pidgeons on the roof deal with it, they've pooped on my car anyway...(hmmmm,
thinking about it, maybe that's WHY they're pooping on my car!) Actually, I
don't think much dust gets out, I'm pretty careful about not making a buncha
dust, and what does go up the exhaust probably sticks to the flux residues
coating the inside of the duct.

    One last thing on fume extractors, until I worked for Zevatech, I didn't
really think too much about how the machines were exhausted at shows like
NEPCON when I attended. But then after working a few shows I became very
impressed with Impell systems. That's what's used to exhaust everything down
at the TAC line. Their systems make a lot of sense once you look into them. No
holes in the roof, can move your line anywhere you want, lower air
conditioning costs...something to think about. Only reason I didn't exhaust
using Impell here was that there was an existing fan on the roof and it was a
little bit cheaper to go the traditional route...couldn't quite convince the
powers that be to spring for a few more bucks. (I'm convinced it would have
been cheaper in the long run though)

-Steve Gregory-

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