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August 2004

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Subject:
From:
"Crepeau, Phil" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Mon, 9 Aug 2004 13:38:12 -0700
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hi,

i don't know the exact conditions of  your pwb, but might it not be possible to run it through a solder dip and hot air leveling operation?

phil

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Cheryl Tulkoff
Sent: Monday, August 09, 2004 12:45 PM
To: [log in to unmask]
Subject: [TN] Removing solder from PTH barrels


Does anyone have any clever suggestions on how to get solder (all of it)
out of .024" diameter PTH barrels?

The barrels are supposed to be completely clear of solder since they are
used for a press-fit connector.  There is just enough solder in the holes
to keep the connectors from seating properly. The barrels ended up with
solder paste in them after some boards were run using the wrong stencil.
The operator wiped the boards by hand towards the holes forcing some
solder paste into the barrels. He didn't follow up with a clean either.

While I'm at it, does anyone have a really good process for cleaning
misprinted boards? Obviously, our current procedure wasn't followed but
maybe someone has a better way.

Thanks, Cheryl

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