Countersinks and Counterbores This is a continuation of our PCB-101 series. In this post we will talk about Countersinks and Counterbores. First I will highlight what these are and then what we need to know when manufacturing a printed circuit board that needs to have counterbores and countersinks. Countersinks and counterbores are not anything unique to printed circuit boards, by the way. They are used in a variety of manufacturing Read More..