X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com Date: Sat, 31 Jan 2015 13:01:36 -0600 (CST) From: mskala AT ansuz DOT sooke DOT bc DOT ca X-X-Sender: mskala AT localhost DOT localdomain To: geda-user AT delorie DOT com Subject: Re: [geda-user] Re: Ground Plane Behavior? In-Reply-To: Message-ID: References: User-Agent: Alpine 2.02 (LNX 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Scanned-By: MIMEDefang 2.74 Reply-To: geda-user AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: geda-user AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On Sat, 31 Jan 2015, Jason White wrote: > That might be convenient, but I think it could be a bit of a "trap" so > to speak. If you have large currents flowing from the re-flooded > "hole" in the copper pour, you may not realize that their is an > electrically poor connection (a single via) to the actual plane. The same problem exists - but is probably worse - when part of the copper pour is connected to the rest only through a very narrow gap, such as between two DIP pads. Unless PCB is going to do a proper finite-element analysis to determine the resistance in such cases, I think it's okay to let a single via be treated as a good enough connection to reconnect the pour, and force the user to think it, as they are already forced to do. -- Matthew Skala mskala AT ansuz DOT sooke DOT bc DOT ca People before principles. http://ansuz.sooke.bc.ca/