Glass etch would leave the fibres looking like pointy spears -- it would
not shear them square...

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Chuck Brummer
Sent: Monday, October 01, 2007 3:05 PM
To: [log in to unmask]
Subject: Re: [TN] Is This a BAD Thing?

Jack,

I read the other replies.  I think you are okay with this and my opinion

is that the platers got carried away with the glass etch.  It is easy to

do, the high concentrate sulfuric has to be replenished often because it

pulls water from the atmosphere and won't work.  Your board was probably

after an add.

I have see this look like pink rings round all holes.  Yours is not that

bad.

Chuck Brummer
3M Manufacturing Engineer
8357 Canoga Ave.
Canoga Park, CA 91304-2605
(818) 734-4930




Jack Olson <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
10/01/2007 09:55 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
Jack Olson <[log in to unmask]>


To
[log in to unmask]
cc

Subject
[TN] Is This a BAD Thing?






I'm not accustomed to looking at reliability issues,
(my designs are usually so perfect... (grin))
so every time I see an X-Ray or a cross-section
I get nervous wondering what I'm actually seeing.

Can anyone explain what the following picture means?

http://www.frontdoor.biz/PCBportal/208what.jpg

onward thru the fog,
Jack

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to 
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to 
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16 
for additional information, or contact Keach Sasamori at [log in to unmask]
or 
847-615-7100 ext.2815
-----------------------------------------------------



---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------