Rudy,
I'm resending this response to your recent TechNet post.  I got back a
confusing message saying the reply was "undeliverable."  Since I didn't see
any further comments on copper distribution (very surprising), I'm assuming
the reply never made it.  Apologies to TechNet if this is redundant.

That was an excellent description of copper distribution.  Thanks.  Plating
thickness distribution does not have to be so bad.  If you go to
www.smartcatshield.com you will find technical papers that can be downloaded
that aptly describe the problem and offer a solution.  One of the papers was
delivered to the IPC in April of 2001.  Another was published in The Board
Authority the same year.

Further to my earlier reply
, MoonMan, the design guru, has confirmed to me that design parameters indeed
will be positively affected if designers believe that board fabs can
satisfactorily plate what is called for in their designs.  Imagine the
implications of uniform plating thickness: etch uniformity on panel plated
substrates and huge benefits for pattern platers, including the possibility
of using thinner resists.  I'm also certain that resist strip suppliers will
breath easier if their customers don't have to strip resist out of the narrow
circuit trace openings of overplated copper.  It goes on and on.  Thanks
again for your post.

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------