On Wed, Jul 30, 2008 at 5:41 PM, James Johnston <[EMAIL PROTECTED]> wrote: > What milling machine / software are you using?
We use the Windows only CircuitCAM software at school. In Altium I had to add a new polygon with a 30mil clearance. This is only a school rule and the pcb's are not going into production if this rule is not met :) > Of course, I routinely keep copper on many of my PCBs for things like ground > / power planes. Usually I put ground on the bottom and keep signals on the > top as much as possible; it's worked for me so far for the relatively simple > PCBs I've done so far. How you connect a polygon to the GND layer? A polygon connected to GND would also needing a clearance to signal layers. I think this would be the same problem. On which layer do you draw the top-layer routes? In the Altium software and OrCAD there were always a TopLayer, BottomLayer, TopOutline etc. , but in PCB I don't fully understand the naming schema. Regards > > --James > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Bortis > Sent: Wednesday, July 30, 2008 15:22 > To: geda-user@moria.seul.org > Subject: gEDA-user: PCB: rectangular polygons and route clearance in pcb-gtk > > Hi, > > I try to draw my first PCB with the gEDA Tools. So far everything has > worked and the Layout is almost finished. > > For the last stage it is required for me to add a massive cooper > polygon over the pcb, because our milling machine would not be happy > to mil all the copper away. > > The tool makes a perfect clearance around the pad's, but not arround the > routes. > > Has anyone an idea what i could change? Eventually I have done > something wrong with the layer because I don't really understand the > palette from solder over component, ... , silk, ..., to solder mask. I > have drawn the routes on the component layer. > > The next problem is, how can I add pcb-outlines, fiducial marks and > add the (0,0) coordinate? > > If someone has some general tips that are related to pcb and milling > machines I would be happy also. > > Regards > > > _______________________________________________ > geda-user mailing list > geda-user@moria.seul.org > http://www.seul.org/cgi-bin/mailman/listinfo/geda-user > > > > _______________________________________________ > geda-user mailing list > geda-user@moria.seul.org > http://www.seul.org/cgi-bin/mailman/listinfo/geda-user > _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user