I was trying the new internal dimensions out for a build on a rather large PCB (60 square inches). I am going along at an
intensive clip because I need to get this thing done.
I’m done, DRC passes with no problem, sweet I say to myself. Then I get my first DRC result from the PCB house, hundreds of via
holes with violating annular ring dimensions.
My vias were set for .025” and a drill of 0.15. The PCB house requires a .005” annular ring and some of mine were .0042 - .0043.
I started a new iteration and suddenly I find that I am no longer on the 5 mil grid but I am working on a 2.5 mil grid. This is
not a problem in itself but I discover that the drill file does not resolve to this accuracy and truncates some valuable
information. All of the violating vias were off the 5mil grid.
I do not think that there should be a hot key for something that can totally trash your layout, and if it does the drill file
generating code should adapt to the smaller dimensions.
