INCREASING THE PERFORMANCE CHARACTERISTICS OF A CUTTER USED TO SAW DIAMOND CRYSTALS V. K. Goncharov , M. G. Kiselev , V. T. Minchenya , and M. V. Puzyrev UDC 621.793:621.373.826 We show that the application of two-sided ultrasound charging to disks used to cut natural diamond crystals and further hardening of surfaces by depositing diamond-like film on them considerably raise the performance characteristics of a cutting instrument. JEPTER74920199921 JEPTER7492021