Cloth backings used for coated abrasives are identified by weight. Cloth backings are filled or “finished” with a variety of materials, glues or resins, to create various backing characteristics, most notably flexibility.
There are three basic weights of cloth: J-weight or “jeans” is the lightest and most flexible. X-weight or “drills” is a heavier cloth that ranges in flexibility, strength and durability and is used on the broadest range of applications.
Y-weight is a heavyweight drills cloth used on heavy-duty, high stock removal operations. Several cloth types are used: cotton, polyester, and polyester/cotton blends.
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