The Model 656 Dimple Grinder made by Gatan is a precision instrument used for grinding circular dimples, of spherical or flat-bottomed profile, in the surface of materials such as ceramics, semiconductors and metals. It is possible produce thickness less than 5µm , although in the case of most metals a final thickness between 20µm and 50µmm is more normal since mechanical damage introduced into the specimen surface by the action of grinding must be removed. The grinding wheels are phosphor bronze, available with spherical or flat edges.

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