Micro-structures are generally made with help of micro machining. Electric Discharge Machining (EDM) is one of the way to produce micro-structures. Nowadays due to increased demand of lighter and precision work products, demand of micromachining has been increased. Micro-EDM is used for micromachining conductive materials. It is extensively used to counterfeit micro scale components like micro injection, micro holes, nozzles, micro probes etc. Physical forces are eliminated since electrode and workpiece are separate, which makes the process very effective for micromachining with micro-tools. This avoids impressions of physical forces during machining. EDM is used for machining hard material, which is electrically conductive. The workpiece and tool are separated by gap called spark gap. In EDM milling, a simple cylindrical tool rotates and travels in a XY plane to cut complex shapes. The CFD analysis is a useful method to analyse the dielectric flow in the gap which affects the machining performance.
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