How does diamond blade compare to stone blade for paving slabs?
There are many types of diamond blade, of which stone blades are one. Some blades are designed to cut tiles – these have a continuous circular edge. Some are for concrete and stone – these have narrow notches around the edge, and some are for asphalt – these have wider notches around the edge. If you were using a proper stone blade to cut concrete then it would have burned out only because the diamonds had worn off ( this can happen without the blade looking visibly much different) or your grinder was too small. Most people would only cut 50mm paving slabs with a bigger 9″ grinder or a petrol disc cutter which uses 12″ blades. Those slabs are made out of strong concrete.
