Thanks to everyone who replied. I learned a lot from this thread.
Obviously I'm not going to find a cookbook approach that works for every
board. Too many people and processes involved in creating an assembled
board. I just want to know enough about the materials and processes to
be able to get a little creative with the stackup when needed without
creating problems.

Robert

----- Original Message -----
From: "Dam, Phil" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, January 28, 2004 2:19 PM
Subject: Re: [TN] PCB warp


> Forgot to mention that the finished pwb can only be as good as the raw
> materials used to make it.  At times fab mfg's are scratching their
heads
> just as assembly people do because of core material manufacturing
variation
> that doesn't show up until etching and/or subsequent ML lamination.
>

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