A random orbital sander is also called a dust sander. A random orbital sander uses a rotating Wheel attached to a chuck or sanding drum. The Wheel rotates around an axis and the sander spins on a second axis perpendicular to the direction of motion of the Wheel. This action is similar to that of a sanding block but with less force used. The result is sanding that is less uniform, with more dust.
A random orbital sander is usually a handheld power tool that sands in an alternating, random-orbit motion. This is, essentially, an improvement upon the circular sander. This new technology was initially used in 1968 by Rupes Tools as a dust extraction system. The rotating wheel used here is powered electrically driven and it can be controlled electronically in order to achieve the best overall result from the sanding operation.
While they are good for surfaces such as wood and vinyl flooring, sanders of this type are also useful for removing paint from metal surfaces like alloy and stainless steel. They also make an excellent choice for rough surfaces and for fine sanding of metal. Smooth orbital sanders come in several different sizes and price ranges so that everyone can find one that suits their needs.
A fine finish on the metal surface requires some level of grit sanding before the final polishing. This is because the finer grit sanding results in fewer impurities in the paint, and therefore makes the finish of the metal smoother and more durable. When using an orbital sander to remove paint from a metal surface it is necessary to wear special eye protection, as these machines are extremely loud and may not be heard easily. Before starting the job it is essential to fully fluid up the machine and disassembles the components before beginning. It is advisable to wear safety goggles to protect the eyes and the skin from any flying particles as well as to avoid coming into contact with any polishing dust.
One good quality orbital sander for the home is the orbital-sanding-flat sander, as it will cut along the grain of the wood or tile effortlessly and remove any dust or imperfections along the way. The flat-sanded material is especially useful when working with very smooth or even sanded wood. Using the flat-sanded tool in this situation can produce a remarkably smooth finish.
Other good options for the home include the palm and random orbit sander. A palm orbital sander can be used fairly easily by placing the hand under the sander and slightly nudging the control dial to begin sanding. Because it uses little to no power, the palm sander may be the easiest to use, particularly in a pinch where they need to finish a piece of furniture or another item quickly arises. The random orbital sander produces similar results but is capable of producing somewhat rougher finishes as it utilizes more power than the palm sander.
When purchasing any tool, whether for home or professional use, always make sure that it is in good condition. Any orbital-sanding machine should come with a cord and a carrying case. A flat-surface sanding tool should have a cord that plugs into an electrical outlet. All sander accessories should also include an adjustable abrasive pile and a blade guard.
There are a number of models of sanders, including electric and gas-powered ones, available for homeowners to purchase today. Most sanders are available with different levels of grit in order to be able to complete different types of jobs. Higher-end orbital sander models will also have interchangeable bits and sandpaper discs so that users can choose the right grit size for a particular project. Regardless of what type of orbital sander model a homeowner purchases, he or she should look for a sander that contains ergonomic features such as an adjustable handguard or a kick plate.