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Polishing Cloths

   To remove deformations from fine grinding and obtain a surface that is highly reflective, the specimens must be polished before they can be examined under the microscope.

Polishing is carried out on cloths of differing resilience with different abrasives. Two processes are available: Diamond Polishing and Oxide Polishing.

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Diamond Polishing

To achieve efficient material removal and to cut consistently through all materials and phases, the hardest known abrasive is used - diamond. Diamonds are available in grain sizes ranging from ¼ to 45 µm. For further details please see Diamond Products.

A variety of cloths for fine grinding, diamond polishing and oxide polishing are available for both magnetic and adhesive fixation.

Struers polishing cloths are made of carefully selected materials. Extensive tests have led to the development of the market's best polishing cloths in terms of preparation quality and durability. Each cloth consists of a number of separate layers: the most important part is the actual fine grinding/polishing surface. A variety of woven, non-woven, and napped cloths are used, depending on their properties with respect to abrasive grain retention and texture. In each case the cloth surface is selected with a view to achieving the best performance and the longest lifetime.

Struers polishing cloths are available in two versions: MD-Cloths and DP/OP-Cloths. The MD-Cloths are equipped with a magnetic backing and are used on an MD-Disc. The DP/OP-Cloths are equipped with an adhesive backing to be adhered on an aluminum disc. The working surfaces of both versions of polishing cloths are identical.

Depending on the material to be polished and the desired result, the cloth and the diamond grain size must be chosen carefully. For details on preparation see Metalog Guide.

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