a high pressure computer controlled liquid jet cutting system particularly adopted for cutting granite on - site at quarries comprising a balanced oscillator , an optional mobile system , a power unit , multiple intensifiers , one or more nozzles with diamond or sapphire orifice and a microcontroller with a control panel for programming and controlling rise and fall , indexer and oscillator system . the computer controlled balanced oscillator with rise and fall in turn comprises a bent cam shaft in cam housing and a drive shaft in a drive housing . the drive shaft on one end has a pulley driven by a motor . also included are means for adjusting the balance . a typical embodiment also includes boom leveling system for tilt , dump and swing , tilting system for chain feed to level and position in travel mode and e chain containing extendible , flexible high pressure hose as well as means for disengaging the oscillator from the high pressure tubing without breaking any fittings for centering purposes .