On Thu, 2010-10-07 at 22:29 +0800, Steven Michalske wrote: > >> I cannot get rid of the jagged diagonal lines on my design. There's lots > >> of them. The picture shows a couple of examples. I've tried different > >> grid sizes, line widths, but nothing fixes the problem. Redrawing them in > >> order to eliminate any sections does not help. On PCB, it shows at some > >> zoom levels but not others. It is in the gerbers as well and it is in the > >> photo-mode picture I attached. > > > Another thought, When I am laying out mixed pitch mm vs mil parts, I > often leave the grid at a comfortable 10 or 25 mil setting. Turn on > snaps to pins and pads. Then I largly ignore the grid. What I am > saying here is that I Use the grid as a guideline. > > So to accomplish this I draw from the off grid pin out to the pcb and > let the 45degree tail end on the grid. then off to the rest of the > layout, on grid. > > When that tail is not quite correct, while drawing I use the u key to > undo the 45 degree tail, this leaves the off grid stub that i can > continue drawing from. > > Having a small grid usuially allows me to make a messier layout. >
Fine description, maybe such a text should be part of a beginner tutorial. > > If these things don't help then we have a bug..... > Sure, we had bugs, and maybe some are still alive. 8 mil traces with 8 mil clearance can be a problem due to arithmetic errors, 8 may be rounded up to next grid position, which is 9 with 1 mil grid. (I would use 8 mil traces, 8 mil grid and 7.9mil clearance to prevent problems) And we had the problem of 0.01 mil traces due to arithmetic errors when mm units are used. I guess the step to nm base units in PCB is still on the todo list. _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
