PCB drill information

The drill information should also be accompanied by a drill drawing (or identifier). This should contain a graphic representation of the drill positions (ie each tool size depicted as a letter or symbol) along with information on hole tolerance (positional and dimensional) and classification (ie plated or non-plated). This ensures efficient, accurate generation of drill programs and provides a valuable tool for inspecting the finished boards to ensure customer requirements are met.

The files supplied should contain X Y co-ordinates of all the relevant tools separately defined. If tools of equal size exist in the program (ie 2.00mm (.079") plated, 2.00mm (.079") non-plated) they should be separated in the file with unique tool numbers. Hole sizes stated should be finished hole requirements.