Grinders; grinding is used in many manufacturing processes to produce a fine surface finish on an object and to bring the size of an object to within very fine tolerances.  A grinding machine has devices that hold an unfinished object and move it past the machine’s abrasive wheel or belt, which is driven by a motor.  For less exacting work, such as sharpening cutting tools, objects can be hand held and ground by a machine consisting mainly of an abrasive wheel or belt.

Belt Sander; a machine used to sand metal and other materials for finishing purposes.  It consists of an electric motor that turns a pair of drums on which a seamless loop of mounted sandpaper turns.  Belt sanders are often used for removing and deburring metals. Non-ferrous metals tend to clog grinding wheels, quickly making them useless for grinding soft metals, while belt sanders continue to grind without clogging. Brushes can also be used in conjunction with the sanding belt for oxide removal, deburring and rounding edges.

Disc Sander; A disc sander is most commonly known as a stationary machine that consists of a replaceable circular shaped sandpaper attached to a wheel being electrically spun around.  The work piece is supported on a front table that can be adjusted to various angles.  It can be used for rough or fine sanding depending on the sanding grit used.