Thread: The 10pm thread (archived)
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Old 01-08-2007, 11:55 PM   #1219
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Quote:
Originally Posted by Simplex3
Specifically toward polishing beryllium spheres, it seems that if you want to polish very hard metals, such as beryllium, cryogenic treatment helps reduce the standard deviation of hardness. However, best practices would dictate that you polish them between copper v-grooves with a <1um diamond slurry, perferably oil based. Best finish would be with 0.25um mono, or poly crystal diamond. The v-groove depth should be one third the diameter of the sphere (in your case, about 0.026" deep for a 2mm ball).
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