You should ask your Fabricator if they can do that with their cam equipment then you can approve the file. But there must be a way to merge we used to do lots of merges in the old days. Fran
-----Original Message----- From: Michael Reagan (EDSI) [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 30, 2002 6:33 PM To: Protel EDA Forum Subject: [PEDA] Copper pours on outer layers Question to smartest of smartest designers out there: Here is the delima, we have a board appox 24 x 30 ( a very large backplane) , many thousands of connections, every layer controlled impedance. The boards are used for high speed tele comminications switching and data monitoring. ( No the the tele com industry is not dead). The designs are as many as 28 layers, some approching .250 inch in thickness, a very expensive baord to design and manufacture. On the outer layers we avoid placing traces, since we embed the entire design, The outer layer are copper pours tied to gnd to reduce EMI and to maintain controlled Z on the next inner layer. The copper is poured on both the top and bottom layers. Copper pours of this size are poured last because they are time consuming. The pours can take 4 hours, and even longer if they are not right the first time. Question to any of the best out there.....can we avoid a copper pour and merge a gnd layer to the top? Does anyone have a method or suggestion to merge copper to flood the top layer. Is there a quicker method? We are using 99SE on aa 1 gig cpu with 512 meg. Mike Reagan EDSI ************************************************************************ * Tracking #: C05FC4455FDD074E8E0D19C321C392CAC217810D * ************************************************************************ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
