Diamond tools use different types of bonds to hold the diamond particles or grains together and attach them to the tool's substrate. The bond type affects the tool's performance and is chosen based on the application and the material being worked on. Here are some common types of diamond tool bonds:

Resin bond: This type of bond is made of synthetic resin and is used for grinding and polishing applications on hard materials such as concrete, granite, and marble. Resin bonds provide a fine finish and are flexible, making them suitable for grinding curved surfaces.

Metal bond: This bond is made of metal powder mixed with diamond particles and is used for grinding and cutting hard materials such as ceramics, glass, and composites. Metal bonds are strong and durable and can withstand high temperatures and pressures, making them suitable for heavy-duty applications.

Electroplated bond: In this bond, the diamond particles are electroplated onto a metal substrate, usually nickel, which is then attached to the tool. Electroplated bonds are used for precision grinding and cutting tasks on fragile or delicate materials such as glass and ceramics.

Hybrid bond: This bond is a combination of resin and metal bonds and is used for grinding and cutting hard materials such as quartz, sapphire, and ceramics. Hybrid bonds offer a balance of flexibility and durability and provide a fine finish.

Vitrified bond: This bond is made of ceramic materials and is used for grinding and cutting applications on hard and brittle materials such as tungsten carbide, ceramic, and glass. Vitrified bonds are strong and wear-resistant and can withstand high temperatures, making them suitable for heavy-duty applications.

The choice of bond type depends on the material being worked on, the desired surface finish, and the specific application.