Diamond tooling is basically a milling process that involves diamonds. They're extremely hard and thus can hold up a log time in cutting and fabrication operations. If you remember these things regarding diamond tooling, you'll deal with the process a lot more effectively. Diamond Tooling Isn't Appropriate for All Materials You might think that since diamond tooling has such a durable nature, it can cut and fabricate pretty much anything. Although most of the time this tooling will fabricate just fine, there are materials that you don't want to use diamond tools with.