To achieve a "great cut," you need the right saw. For most residential cracks (1/4 inch wide or less), a 4.5-inch or 7-inch angle grinder with a diamond blade is the perfect tool.
After cutting, use a wire wheel or a compressed air lance (the “great clean”). Any dust left behind will prevent adhesion. For a truly superior repair, apply a bonding agent immediately after the cut, before dust settles again. great cut 4 crack better
| Application | How a “Great Cut for Crack” Helps | |-------------|------------------------------------| | Glass/wafer dicing | Scribe-and-break: a precise shallow cut creates a stress concentration, enabling a perfect straight crack for separation. | | Concrete/asphalt repair | Cutting along a crack (crack chasing) before sealing – requires a diamond blade that follows irregular paths without chipping. | | Metal fatigue testing | Notch cutting to initiate a fatigue crack at a predetermined location (ASTM E647 standard). | | Composite machining | Special router bits that prevent delamination and crack spread along fiber layers. | To achieve a "great cut," you need the right saw
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