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February 2006

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Subject:
From:
Stephen Gregory <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Stephen Gregory <[log in to unmask]>
Date:
Thu, 23 Feb 2006 14:09:53 -0600
Content-Type:
text/plain
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Hi Scott!

Do your boards look like any of these pictures?

http://www.stevezeva.homestead.com/files/Mousebites1.jpg

http://www.stevezeva.homestead.com/files/Mousebites2.jpg

http://www.stevezeva.homestead.com/files/Mousebites3.jpg

http://www.stevezeva.homestead.com/files/Mousebites4.jpg

http://www.stevezeva.homestead.com/AnnularRing.jpg

http://www.stevezeva.homestead.com/AnnularRing2.jpg

http://www.stevezeva.homestead.com/AnnularRing3.jpg

-Steve Gregory-

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Scott Decker
Sent: Thursday, February 23, 2006 1:34 PM
To: [log in to unmask]
Subject: [TN] Board etching question for you board shops out there.

All you board gurus out there, I have a question for you.
   What are the reason(s) I see traces that look like a mouse has
nibbled on the copper to etch it, as opposed to acid etching the copper?
I'm looking at some boards that look like the resist was put on by a
drunk with an old marker pen! The vias are not even round and the SMD
lands have ragged edges also. This shop is off my list from here on out
and going to be rebuilding some boards due to minimum trace problems
too, but can anyone tell me what causes the ragged edges like that? I
understand that specs are looking at averages, which means a high and
low end of the spectrum. I think I know who put the low numbers into the
pot. :-(
Thanks for any info.

Scott Decker
AKA: Padmasterson
Broad Reach Engineering CAE
Ph. 480-377-0400 Ext. 34
FAX. 480-968-4597
Tempe, AZ.


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