The EDAC1 Sinker EDM machine is built to deliver ultra-precision accuracy and surface finish capability. The EDAC1 is capable of achieving X/Y/Z positioning tolerances of ±1 micron (±0.000040”) with surface finishes down to 1.3µin Ra (0.25µmRz). The machine can produce a smallest inside corner radius of 5 microns (0.0002”), and the optional Mi C-axis provides positioning index accuracy of ±2 arc seconds. The EDAC-1 is equipped with the Windows 7-based Hyper-i control, which provides a universal interface for all Makino EDM machines, and utilizes a 24” class high definition touch screen with advanced functions to enhance operator and machine performance.