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Brushes are usually devices made of wire or other types of filaments used for cleaning, painting, grooming or used to scratch of the roughness or burrs on a surfaces and a variety of other jobs. Synthetic bristles on brushes are most commonly found. These are usually made out of wire, nylon, polyester or a combination of these materials. Brushes can also be made out of animal hair such as pig, horse, and squirrel fur.

Synthetic brushes are often used because of the relative low costs compare to brushes made of natural animal fur or hair. In painting, the different types of animal hair will often call for a certain type of bristles on the brush. For example, pig or hog hair is more springy and coarse than squirrel fur. It is used mainly for painting with acrylics and oils.

In the manufacturing industry, brushes of all configurations are needed for various jobs. These types of brushes are often made of wire or other very strong filament. Some are shaped with small, thin twisted wire or filaments. Others have the bristles spread in around shape, such as a disk. Others might be shaped into a cylinder or have external or internal spirals, coils, arcs and have varying lengths. Some can be made very small while others will be large in size. Brushes can also be custom made by companies specializing in brushes.

Brushes used for industrial purposes typically use filaments made of standard materials, including nylon, polypropylene, polyester, conductive, natural fibers, stainless steel, brass and mild steel. Applications and use for these types of brushes will vary according to the job needed. They can be used for sealing machinery from debris, removing static electricity, skirting around the bottom of different types of machinery and vehicles, guiding, gears and closing gaps in conveyor systems.

These tools can be made using several methods. Strip brushes are made using a combination of channel sizes, fill material and configurations. They can also be easily customized. Staple set brushes and twisted wired are also common.