Actually I can see a line between the Cu that looks as though it may be a
void or resin.

James

----- Original Message -----
From: "Steve Gregory" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, September 13, 2005 2:43 PM
Subject: Re: [TN] raised vias...I did a "Okie" cross-section


> Hi All!
>
> I have a local shop here do a lot of cross-sections for us, but I couldn't
> take
> the board over to them until tommorrow. But I was so curious to take a
look
> at the bumps, or "raised vias", I decided to do what I could, to see what
I
> could.
>
> We're not set-up to do cross-sections here (that may change in the
future),
> but I took a dremel tool and got close to where I wanted to look, then
> started
> using finer and finer grit wheels. Then I used an exacto knife and
> carefully
> scraped material away until I was able to see how things looked at the
> raised vias. This was done under a microscope, and I mean it was done
> carefully.
>
> I know it's not as good looking as what a real cross section would look
> like,
> but it does give an idea of how things look. Go to:
>
> http://www.stevezeva.homestead.com  and look at "Okie Cross-section".
>
> I still don't know why I have the bumps...they look like they're solid
> copper.
>
> Kind regards,
>
> -Steve Gregory-
> Senior Process Engineer
> LaBarge Incorporated
> Tulsa, Oklahoma
> (918) 459-2285
> (918) 459-2350 FAX
> __________________________________________________________________
> This message may contain information that is privileged and confidential
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