Stone diamond tools are key elements in the machining of natural stone, especially hard stones such as granite. Stone diamond tools are mostly used in stone fabrication machines. They are used in different machining technologies like cutting, abrasive milling, abrasive drilling, grinding and polishing. All stone diamond tools have the same machining principle and that is grinding. In this case, the tool with many cutting edges and coincidental geometry grinds the surface of the stone. Typical stone diamond tools are wires, circular blades, mills, tools for grinding and polishing. They are composed of support and abrasive segments, which are composed of diamond grains and a matrix. The support is the part of the tool, to which the abrasive segments are fixed. The support gives the right shape to the tool, transmits the kinetic energy from the machine axes to the diamond grains and absorbs the stresses generated during machining. Diamond grains constitute the cutting edges. They are characterized with grain size, shape and concentration. The matrix is a metallic alloy fixing the abrasive grains on the tool support in order to make machining possible. For effective and quality machining with stone diamond tools it is necessary to get the right combination of matrix and diamond grains. Hard stones like the granite have to be machined with tools that have a harder matrix and suitable diamond grain.
