Selecting the Right Diamond Tools For a Concrete Grinder
2. WHAT DISC FOR HARD CONCRETE? Grinding hard concrete means that the dust is soft and unabrasive (see Para. 1 above) so the metal MATRIX that the segment is made of needs to be 'soft bond' and easily eroded to expose the diamonds. Often a coarser grit can be beneficial because it may produce coarser dust to help erode the matrix.