The setting hammer is a stone cutting tool .
This hammer is a special form of sledgehammer used by stone carvers. In contrast to the sledge hammer, the setting hammer has a fin (a kind of cutting edge) that does not point at right angles to the hammer handle, but in the direction of the hammer handle. Blacksmiths then call it a cross hammer. The fin of the sledge hammers is not sharp, but rounded.
The setting hammer has a sharp edge and originally had not only one fin, but two, as well as a flat surface (track) on the other side of the hammer head. The setting hammer is used to knock off large or unwanted stone protrusions. One of the two beveled cutting edges of the setting hammer is set on the stone by a stonemason. A second stonemason hits the flat side of the setting hammer with a sledgehammer or a large-sized mallet .
There are also setting hammers with only one cutting edge.
Setting hammer, coat of arms Hammereisenbach