The sapphire diamond bronze cutting knife has only a few sinks in the diamond metal bond part of the tool teeth. When in use, the slag drainage is low and the rotation speed is low. Bar material takes too long. At present, Sapphire Cutter usually takes about 1.5 hours to take out a 2 inch Xmm sapphire bar in China. Sapphire Cutter takes about 2.5 hours for a 4-inch Xmm bar to take about 3.5 hours..
