Crack Chasing Diamond Blades for Concrete Repair

To chase a concrete crack, mount a crack chasing diamond blade on an angle grinder or walk-behind saw and guide the blade along the existing crack line, cutting a shallow, uniform groove. This removes loose debris and widens the crack to a consistent width and depth, preparing it for cleaning and filling with an appropriate repair sealant or epoxy.

For grinding down concrete surfaces, a diamond cup wheel mounted on an angle grinder is typically the best tool for spot grinding, while larger floor grinders with diamond segments handle bigger areas. For crack-specific work, a crack chasing blade is preferred since it's shaped to follow narrow crack lines rather than flatten broad surfaces.

Crack chasing blades are commonly available in small diameters, typically 4 to 7 inches, suited for angle grinders used in tight repair areas. Blade selection depends on the width and depth of the crack, the grinder's arbor size, and whether the work is on vertical or horizontal surfaces. Consult product specs to match blade diameter to your tool.

Most crack chasing diamond blades are designed for dry cutting, making them convenient for repair work in the field without water lines. However, some models support wet cutting to reduce dust and heat buildup during extended use. Always check the specific blade's cutting method rating before use.

Bond hardness should be matched to the concrete's abrasiveness: softer bonds wear faster but cut harder, more abrasive aggregate efficiently, while harder bonds last longer on softer, less abrasive concrete. DI Tool offers very soft, soft, medium/soft, medium, and medium/hard bonds to match varying concrete conditions found on repair sites.

Crack chasing blades are typically narrow and shaped to follow cracks in concrete surfaces, while tuck point blades are wider, designed to remove deteriorated mortar joints in brick and masonry walls. Both are diamond segmented tools, but their geometry and thickness are optimized for different repair tasks.