A scrub hammer is a tool used by artists and construction workers to add texture to stone or concrete. It can be a power or hand hammer with a metal head that has rows of spikes. Bush-hammering is useful for making stone floors non-slip and is commonly used in masonry.
A scrub hammer is a meat tenderizer-like tool that is used by artists and construction workers to add a pockmarked texture to hardened material such as stone or concrete. On a brush hammer, one end of the metal head is rectangular with rows of spikes designed to create tiny holes in the concrete when struck. The material is hit several times with the pointed head to achieve the desired texture effect. This type of texturing hammer can be a power hammer or a hand hammer. The stone that has the texture of a bush-hammered is called bush-hammered, formulated as “bush-hammered marble”.
Generally, a bush hammering tool designed for hand use will feature a heavy two-sided metal hammer head with a hole in the center that seats it on a long, relatively thin wooden handle for grip. The metal used for bush hammer heads is often tungsten carbide or steel. The hand version is most frequently used in art, on softer sculpture stones such as limestone and marble. Harder stones like granite can be bush hammered by more powerful electric machines, which may also be called scarifiers. The head for a bush hammer is sometimes purchased separately from the grip or hammer.
This type of texturing technique can be used to make stone floors non-slip by adding easy-grip areas to the floor surface. Bush hammering is especially useful in concrete and stone floors used in rainy climates or near entrances and exits to showers or swimming pools. When using a breaker hammer to add a non-slip texture to a floor, extra care must be taken to avoid adding a rough or sharp texture to the floor that could injure customers. A gently used sandblaster can dull any awkward areas of floor texture that arise while bush hammering the material. Sometimes, stone that has been pre-bush hammered can be purchased from building material suppliers.
Occasionally used in sculpture, bush hammering techniques are more often employed in the field of masonry. In the field of masonry, buildings are constructed with blocks of material held together by a binder called mortar. Blocks can be made from materials such as concrete, marble, and other types of sturdy stone. The stones are held together by mortar, a thick paste composed mostly of wet sand and cement. A common example of a structure built using masonry techniques is a brick wall.
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