Hi Cara! Take a look at Klein Wassink's book (ISBN 0-901150-14-2) , chaper
8.1.3 and the reference papers in that section for information on the cause
for blowholes. I can't find my references but I believe Colin Lea did a
multi-article spread on the physics of blowholing in Circuit World
magazine. Good Luck.

Dave Hillman
Rockwell Collins
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"Cara.Startek" <[log in to unmask]>@IPC.ORG> on 08/09/2000 01:52:17 PM

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Subject:  [TN] Blow Holes


I'm having a problem with blow holes occurring in a thick board that I'm
running on a wave solder machine.  As a test I am going to bake the boards
for 24hrs to remove moisture from the board and eliminate this as a cause
of
the problem.  Is there any thing else that cold be causing blow holes?

Cara Startek

Process Engineering
http://www.leitch.com

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