Has anyone had holes that disappeared from the NC drill files when outputting a file from Allegro 16.3?
I have a board where I have placed a new component. The manufacturing drawing and drill tables show the new holes and hole counts are correct. But when I viewed the gerbers and drill in GCprevue, the new components holes had disappeared. I then double checked the NC drill file in notepad and they have definitely disappeared.
Has anyone seen this behaviour before?
I have checked the start and end pads and they all appear fine.
I have also noted that there appear to be a 'TOL' which refuses to follow the defined hole tolerances.