Chinese craftsmen used diamonds and sapphire to polish tools thousands of years earlier than previously believed, according to new research findings. Robert Siegel talks with Peter Lu, a physics ...
Stadea Series Standard K - 4" Diamond polishing pads set with backing pad. Polishing pads are 3 MM thick and Rigid rubber Hook and loop backing pad has US Standard 5/8-11 female thread Set includes 2 ...
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