In applications requiring blind hole pattern (such as holes and odd shaped pockets with tight tolerances corner radius, i.e. squares, triangles, or hexes) a combination of Sink EDM (RAM / plunge EDM / conventional EDM) and Wire EDM processes can yield excellent results.

Sink EDM is particularly useful in case of blind hole patters needing a very high degree of accuracy.

Examples: Gears: We manufacture small and miniature Gears, with up to AGMA Class 11, using the Electrical Discharge Machining EDM process. We wire EDM the “plunge pattern” on our accurate Wire EDM Machines. This plunge tool is then used on our Sinker EDM Machine to produce very very accurate gears