All About Tumbling Grit
Mesh is a little more precise, referring to the screen through which a particular grit must pass. The term mesh is more commonly used for abrasive sizes 1000 and higher. For practical purposes, however, grit and mesh can be considered the same thing: 1000 grit = 1000 mesh. A micron is 1/1000 of a millimeter. About the only time you''ll come ...