Ivan, Instead of poring a copper plane that is solid, use one that is cross hatched. You will have less issues with solder mask adhesion, which would be more concern than warping. (Solder mask adheres to the substrate better than it does to the copper).
Regards, Ted -----Original Message----- From: Bagotronix Tech Support [mailto:[EMAIL PROTECTED]] Sent: Tuesday, May 14, 2002 10:51 AM To: Protel EDA Forum Subject: [PEDA] board warp question Hello, all: I have a double sided PCB about 4 x 4 in. square, supported by mounting holes, 1 in each corner. I want to pour a polygon ground plane on the top side. The plane will cover probably about 80% of the board area. There will be no plane on the bottom side. Am I going to have a problem with board warp with this? Thanks to those who responded to my "round board" questions. Best regards, Ivan Baggett Bagotronix Inc. website: www.bagotronix.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *