Choosing the right rotary end mill for your CNC operation is a key part of any machining business. Unfortunately, there are so many different options that even the experts can get confused from time to time. The different lengths, materials and flute numbers are just the start of choosing the correct tool. You also have to consider coatings, tool life and cutter head geometries. To make the process less painless, Kyocera SGS has put together a list to make sure you pick the right end mill every time.