Our Diamond-Impregnated XDS Shoes cut like a diamond grinding rock which taked extremely small bites of the target that creates particle size cuttings. That cutting geometry cannot cut faster than about 1 ft per hr, even in soft material.
We now offer Hybrid XDS shoes that can haveshaped carbide inserts that are molded and furnaced into the matrix during the furnace infiltration at 2150F, so the carbide becomes an intergral part of the matrix...not just added by torch.
Shown below is an XDS-C with 3/8" round carbide inserts.