Precision in Electrical Discharge Machining

Two separate pieces of metal can fit together so perfectly that there's not even the tiniest gap.

You'd swear you're touching a single solid block. It looks almost unbelievable at first glance.

So how is such extreme precision possible? The secret lies in electrical discharge machining,

also known as wire cutting. The process uses a continuously moving fine metal wire

and creates high-frequency electrical discharges between the wire and the workpiece, generating

temperatures of 8,000 to 12,000 degrees Celsius. This intense heat melts or vaporizes the metal

locally, and a special fluid flushes away the material, shaping the exact cut. The result is

incredibly detailed. Cuts can be made down to the nanometer scale. For metal parts with highly

complex internal structures and extremely tight tolerances, wire cutting is the only method that

can achieve such precision without causing deformation. Plus, the edges come out smooth

and burr-free. That's why what looks like a single solid block is often just separate

parts joined together. The seams are simply too small for the naked eye to see.