Mold-cavity honing

Tooling surfaces such as mold cavities and die openings require meeting certain surface finishes. Rather than identifying the required finish as dull, vapor-honed satin, shiny, etc., there are standards such as a diamond polishing compound, SPI (originally SPI/SPE) Mold Standard Finish, and American Association s standard B46.1 Surface Texture (extremely accurate surface measurements a near-perfect system) that are used. This ASA B46.1 corresponds to the Canadian standard CSA B 95 and British standard BS 1134. 

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