The machine used for cutting diamonds can vary depending on the specific process and purpose. Here are some methods and machines commonly used:
1. Cleaving or sawing: In this process, a groove is made in the diamond using a laser or a diamond saw, and then the diamond is split with a steel blade. The sawing can be done manually or with the help of machines equipped with diamond blades or lasers.
2. Ultra-precision cutting: For ultra-precision cutting, natural monocrystals or high-temperature high-pressure (HTHP) synthetic monocrystals are used. The cutting is typically done using tools with massive diamond or diamond coatings. The machines used for ultra-precision cutting can include turning, drilling, or milling machines.
3. Abrasive processes: Diamond is also used in abrasive processes such as grinding. The usual form of diamond in cutting tools for abrasive processes is micron-sized grains dispersed in a metal matrix, often cobalt. This is referred to as polycrystalline diamond (PCD) and can be found in mining and cutting applications.
4. Chemical vapor deposition (CVD) diamond: CVD diamond is a synthetic diamond that can be used to make thin diamond film coated tools and brazing diamond film tools. These tools can be used to machine auto parts and other materials.
Overall, the machines used for cutting diamonds can range from manual tools to sophisticated machines equipped with lasers, diamond blades, or diamond-coated tools, depending on the specific cutting process and the desired outcome.
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