Wire EDM uses a wire-shaped, elongated electrode (approximately 0.2mm in diameter). By applying discharge while the taut wire electrode is close to the workpiece, the workpiece is cut (or melted) like with a wire saw. The trajectory of the wire electrode can be numerically controlled, allowing for precise cutting of the workpiece into any desired shape. The advantages of wire EDM include the absence of the need to machine the electrode and the ability to process complex shapes that cannot be achieved by cutting.

However, the machining precision depends on the wire diameter. Thinner wire electrodes allow for finer machining, but the machining speed decreases due to lower current values. Conversely, thicker wire electrodes enable faster machining but reduce machining precision. When using thick wire electrodes, it is possible to complete the machining in the first cut, but depending on the application, multiple cuts with different wire diameters may be necessary, resulting in variations in machining time and precision. Wire EDM (WEDM) is used in the manufacture of press molds and the machining of carbide tool tips, among other applications.

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Winning bidder must contact Charlene Smith at 301-784-5450 or email csmith@allegany.edu to arrange for pick up.