TEK4’s EDM drilling machine (Electrical discharge machining) are designed and built in Leicestershire, United Kingdom. EDM drilling is a manufacturing process where the desired hole, straight or shaped is obtained by using an electrical discharge between the part and the brass electrode. Our EDM systems are some of the most advanced EDM drilling machines available, with our newest 6thgeneration of edm systems producing world leading performance, best in class metallurgyand dynamicfeatures. Our high speed edm machines are designed and built to hole drilling in small, medium, large and very large aero and IGT blades, vanes, segments and other components. All of our EDM systems can have drill after coating technology (DAC), which uses a high-frequency fibre laser to remove the non-conductive coatings on components, this advanced technology enables cooling holes to be drilled into the part after the thermal barrier coating has been removed in the same edm system. This gives great flexible allowing both the laser ablation and edm system to be in one machine giving excellent levels of accuracy to be achieved between the 2 processes helping to keep the thermal barrier coating overcut to a minimum.  edm cooling holes is a process applied to jet engines and gas urbines, blades, vanes, segments and other components