A multi-axis numerically controlled electromachining system comprising: a rotatable tool made of a brass to induce controlled workpiece metal removal via high intensity thermal erosion; a numerical control device (110, 102, 104) operatively connected with the tool to control movement of the tool electrode about a plurality of axes to machine complex geometrical configurations; a pulsed DC power source which is used to provide voltage across the tool and workpiece; characterized by: an electrolyte medium comprising an aqueous solution of NaNO 2, NaNO 3, soda, or NaCl; a fluid supply which supplies said electrolyte medium and delivers it from the fluid supply to the tool and between the tool and the workpiece; the numerical control device being configured to: control a supply of electrical power to the tool; wherein the numerical control device is further configured to: monitor erosion intensity by sensing erosion current; determine if persistent arcing or short-circuiting is occurring between a work piece and the tool; and regulate tool feed speed with respect to the work piece by: increasing tool feed speed if the erosion intensity is below a set level; and reducing tool feed speed if persistent arcing or short-circuiting is occurring. a rotatable tool made of a brass to induce controlled workpiece metal removal via high intensity thermal erosion; a numerical control device (110, 102, 104) operatively connected with the tool to control movement of the tool electrode about a plurality of axes to machine complex geometrical configurations; a pulsed DC power source which is used to provide voltage across the tool and workpiece; characterized by: an electrolyte medium comprising an aqueous solution of NaNO 2, NaNO 3, soda, or NaCl; a fluid supply which supplies said electrolyte medium and delivers it from the fluid supply to the tool and between the tool and the workpiece; the numerical control device being configured to: control a supply of electrical power to the tool; wherein the numerical control device is further configured to: monitor erosion intensity by sensing erosion current; determine if persistent arcing or short-circuiting is occurring between a work piece and the tool; and regulate tool feed speed with respect to the work piece by: increasing tool feed speed if the erosion intensity is below a set level; and reducing tool feed speed if persistent arcing or short-circuiting is occurring. an electrolyte medium comprising an aqueous solution of NaNO 2, NaNO 3, soda, or NaCl; a fluid supply which supplies said electrolyte medium and delivers it from the fluid supply to the tool and between the tool and the workpiece; the numerical control device being configured to: control a supply of electrical power to the tool; wherein the numerical control device is further configured to: monitor erosion intensity by sensing erosion current; determine if persistent arcing or short-circuiting is occurring between a work piece and the tool; and regulate tool feed speed with respect to the work piece by: increasing tool feed speed if the erosion intensity is below a set level; and reducing tool feed speed if persistent arcing or short-circuiting is occurring. control a supply of electrical power to the tool; wherein the numerical control device is further configured to: monitor erosion intensity by sensing erosion current; determine if persistent arcing or short-circuiting is occurring between a work piece and the tool; and regulate tool feed speed with respect to the work piece by: increasing tool feed speed if the erosion intensity is below a set level; and reducing tool feed speed if persistent arcing or short-circuiting is occurring. monitor erosion intensity by sensing erosion current; determine if persistent arcing or short-circuiting is occurring between a work piece and the tool; and regulate tool feed speed with respect to the work piece by: increasing tool feed speed if the erosion intensity is below a set level; and reducing tool feed speed if persistent arcing or short-circuiting is occurring. increasing tool feed speed if the erosion intensity is below a set level; and reducing tool feed speed if persistent arcing or short-circuiting is occurring.