Search the forum archives - there's many many many posts on the benefits of each. > > From: "Jean Bratton" <jean.bratton@xxxxxxxxxxxxxx> > Date: 2008/07/25 Fri AM 10:03:19 CDT > To: <icu-pcb-forum@xxxxxxxxxxxxx> > Subject: [PCB_FORUM] Re: Planes be POSITIVE or NEGATIVE > > I'm surprised to not see any feedback on this at all! My take is this > > External layers or any layer that's mixed wiring/plane you need to use > positive shapes. Dynamic is best as you don't have to update each time > you change something in that area. > > Inner layers that are fully plane (may be multiple planes, just no > traces) are best done with negative planes. Allegro database and output > data files are smaller. > > > > From: icu-pcb-forum-bounce@xxxxxxxxxxxxx > [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Zafar Bhatti > Sent: Thursday, July 24, 2008 6:19 PM > To: icu-pcb-forum@xxxxxxxxxxxxx > Subject: [PCB_FORUM] Planes be POSITIVE or NEGATIVE > > > > Hi All, > > > > What is the preferred way to make planes, positive or negative, dynamic > or static. Any thoughts, insights would be deeply appreciated. > > Any pros / cons for both cases? > > > > Regards, > > > > Zafar Bhatti > > Design Engineer > > Whizz Systems Inc. > > Office:(408) 980-0400 Ext. 112 > > Cell:(408) 569-0517 > > zbhatti@xxxxxxxxxxxxxxxx <mailto:zbhatti@xxxxxxxxxxxxxxxx> > > > > > Dave Schaefer dave.schaefer@xxxxxxx ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list go to //www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx -----------------------------------------------------------