... AXIS DRO: optional KN-EDM- SMALL HOLE-DRILLING MACHINE -43Main features:1. Capable of processing deep hole with diameter 0.2-6 mmWorking ... )Capable of processing wire-cut starting hole, filter hole, nozzle hole, air hole, multi hole, extra deep hole and so on.Capable of processing ... plane, curved plane of work piece.Capable of eroding broken drilling head, screw tap in work piece, instead of harming ...