Tool Grinder
The tool grinder has two abrasive wheels that rotate at high speeds. These wheels are usually used to remove material from cutting tools to sharpen them. This tool is dangerous, and should only be used by properly trained users. If you don't already know how to use this tool, you probably shouldn't be using it. If someone is using the tool grinder, don't stand behind it. The wheels of the grinder are brittle, and are prone to disintegration. If you really desperately want to use the tool grinder for some reason, (1) contemplate your life goals and (2) become a shop improvement proctor. If you really really need it for a project, talk to Drew and be ready to explain.
Read more about the tool grinder
Materials
Grinding is used most commonly on cast iron and a variety of steels. Generally speaking, any steel tool bits can be sharpened on the wheel. Avoid grinding aluminum, stainless steel, brass and plastics since they can clog up the wheel and release harmful particles.