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"Tolerances and surface finish"

Mass finishing is a process of smoothing the surface of metal parts through a mostly hands-off approach. There are many mass finishing and media blasting techniques that utilize different equipment and media. Fundamentally, the process utilizes either a tumbling, vibratory, or abrading action to modify the surface of the part.The media, compound, and equipment used determines the amount of material removed and the resulting smoothness and/or shine of the final part. It is important to understand the key tolerances of the part to identify the appropriate finishing method and media, ensuring it is not too aggressive and delivers the desired surface finish. Precision tolerances, tight-fit parts, ultra-low friction parts, and cosmetic appearance will require more careful consideration when selecting a finishing method.


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