Wire brush
A wire brush ( scraping brush ) is a brush with bristles made of fine steel wire, which is used to clean castings , to clean files , boiler tubes , bottles, threads and other insensitive objects. It is also made as a hairbrush for humans and animals and - made of brass - or bronze wire - for bronzing, in that iron, processed with such brushes, takes on an ephemeral bronze color.
Brass brushes are also used in the improper preparation of the pyritized fossils from the Devonian slates of the Rhenish Slate Mountains . In doing so, the fossils take on a beautiful shine and color, but microstructures are destroyed. Rudolf Opitz therefore decidedly rejected this possibility of preparation as early as 1932.
A distinction is made between wire brushes, which are used for brushing directly by hand, and technical brushes that are part of a device.