Drilling employs rotating drill bits to create the cylindrical holes inside the workpiece. The design with the drill little bit permits the squander metal—i.e., chips—to slide far from the workpiece. There are many types of drill bits, Each and every of which happens to be used for a particular application. https://shanemseed.ampedpages.com/the-basic-principles-of-precision-cnc-machining-46170999