Electric sparking drill and method for forming a hole with an electric spark

   
   

An electric sparking drill and a method for using the same to drill a hole in a workpiece where at least one of a voltage applied to an electrode, the conductivity of a liquid applied between the electrode and the workpiece during drilling, and a gap between the electrode and the workpiece are controlled to create the desired hole in the workpiece. The electric sparking drill and a method for using the same to drill a hole in a workpiece also improve the hole operation and/or the quality of the hole made by operating at the arcing voltage, including a touch stop function, including a sacrificial electrode, and/or including a guide member function.

 
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