Sanding machine is a tool used to smooth wood and automotive or wood finishes by abrasion with sandpaper. Sanders have a means to attach the sandpaper and a mechanism to move it rapidly contained within housing with means to hand-hold it or fixes it to a workbench. Woodworking sanders are usually powered electrically, and those used in auto-body repair work by compressed air. There are many different types of sanders for different purposes.
We can find a different type of sander machine in the market or over the internet.
Belt Sander: A belt sander is a machine used to sand down wood and other materials for finishing purposes. It consists of an electrical motor that turns a pair of drums on which a seamless loop of sandpaper is mounted. Belt sanders can be either hand-held, where the sander is moved over the material, or stationary (fixed), where the material is moved to the sanding belt. Stationary belt sanders are sometimes mounted on a work bench, in which case they are called bench sanders. Stationary belt sanders are often combined with a disc sander.
Belt sanders can have a very aggressive action on wood and are normally used only for the beginning stages of the sanding process, or used to rapidly remove material. Sometimes they are also used for removing paints or finishes from wood. Fitted with fine grit sand paper, a belt sander can be used to assure a completely smooth surface.
Stationary belt sanders are used for removing non-ferrous metals, such as aluminum. Non-ferrous metals tend to clog grinding wheels, quickly making them useless for grinding soft metals, while belt sanders continue to grind without clogging. This is because the small grooves in the sand paper are opened up as they go around the arc of the drive wheel.
Belt sanders can vary in size from the small hand-held unit shown in the illustration to units wide enough to sand a full 4-by-8 foot sheet of plywood in a manufacturing plant. Some belt sanders can be as tall as 1.2 metres and 70 centimetres long.
Straight-line sander: A sander that vibrates in a straight line, instead of in circles. Good for places where hand sanding is tedious or “blocking” is required. Most are air-powered, a few electric. The first pneumatic straight line sander was patented by Otto Hendrickson in 1969.
Detail Sander: A hand-held sander that uses a small vibrating head with a triangular piece of sandpaper attached. Used for sanding corners and very tight spaces.
Stroke sander: A large production sander that uses a hand-operated platen on a standard sanding belt to apply pressure. For large surfaces such as tabletops, doors, and cabinets.
Drum sander: A large sander that uses a rotating sanding drum. As with a planer, the operator adjusts feed rollers to feed the wood into the machine. The sander smooths it and sends it out the other side. Good for finishing large surfaces.
Wide-belt sander: A large sander similar in concept to a planer, but much larger. Uses a large sanding belt head instead of a planer’s knife cutterhead, and requires air from a separate source to tension the belt. For rough sanding large surfaces or finishing. Used mainly for manufacturing furniture and cabinets.
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