EVP – R Series machines are used for fine sanding and polishing of gold, silver, etc. jewelry. Unlike the EVP Series, the EVP – R Series offers more precise surface treatment. The radius work bowl allows workpieces to be machined more precisely and without impact between the surface treatment materials. Thanks to the radius work bowl design, the workpieces rotate more strongly, even at low speed. At the same time, the possibility of workpieces being caught on the edges of the work bowl is avoided.