What can I do to keep this board from warping?

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#724

From: mickgeyver
Date: Fri, 25 Sep 2009 23:02

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I'm trying to make a 10x scope probe that is capable of dealing with
slightly higher voltage levels of about +/- 20v yet at a high
impedance ~20Meg. This link "http://picasaweb.google.com/
UncleAltheKiddiesPal/Probe?feat=directlink" has some photo's showing
the probe and board warpage. The board was made from double sided
0.020-inch stock etched with a PCB milling machine (perhaps part of
the problem). It is (obviously) hand assembled.  I would appreciate
any tips or techniques that I could use to keep this board from
turning into a potato chip during assembly.

Thank you.

al

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From: mickgeyver <eyezkubed@yahoo.com>
Newsgroups: sci.electronics.design,sci.electronics.repair,aus.electronics
Subject: What can I do to keep this board from warping?
Date: Fri, 25 Sep 2009 16:02:55 -0700 (PDT)
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