CNC machine tools use a computer to direct the cutting of workpiece, which consists of a base, spindle and cutting element. The computer knows how much material you want removed so it can calculate the amount of pressure required to remove that amount of material
The first step in machining is drilling holes. In order to drill a hole, you need to find the center point on your workpiece and mark it with a center punch or drill bit. Then, select a drill bit that matches the diameter of your hole and center it in the correct spot on your workpiece
Once you've drilled all your holes, use a pilot hole for every hole you want to enlarge. A pilot hole is just like a regular drill bit except that it's smaller than what you're actually going to use. This lets you make sure that everything is lined up correctly before you start boring into your workpiece.
cnc machine drilling bit
