On Oct 8, 2010, at 8:57 AM, Levente Kovacs wrote: > On Fri, 08 Oct 2010 10:31:10 -0400 > Rick Collins <gnuarm.2...@arius.com> wrote: > >> Personally, I can't imagine a PCB larger than 2 meters much less 4 >> meters. Or is the possibility of uses other than PCB design being >> considered here? >
FYI -- the largest dimension I ever did on a board was 54 inches. The board was 54 x 5 inches. It was a specialized back-plane board. As I recall (this was in the 1980's) the 54" limit was determined by the maximum panel size of our vendor. The actual raw pcb panel was a little larger, but 54 inches allowed appropriate margins. Even as it was, the board was odd-ball enough that we had to hunt for a vendor that actually wanted the business (of course, it was a controlled-impedance board also, so it had some other unusual specification in addition). I couldn't say what the standard panel sizes are in the industry, but I could make an effort to find out. Of course, that could grow over time, but somehow I don't think a 4m x 4m board is likely even in the long term. IMHO, pcb design decisions should be based around making pcb a good tool for designing pcb's... if people find other uses or it, OK fine, but don't drive design decisions around odd-ball uses. There are other tools for mechanical CAD, architectural, etc. -dave _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
