A round stone excavated at Israel’s Tabun Cave in the 1960s represents the oldest known grinding or rubbing tool, say researchers who scrutinized the 350,000-year-old find. The specimen marks a ...

Archaeologists say they have found the earliest known example of a stone tool used for abrading surfaces, dating it to 150,000 years before such tools were thought to have first been used ...

Robert J. Istok was named vice president of Abrading Systems Co., Elgin, which does precision grinding and lapping as well as aluminum extrusion and fabrication for precision components.

Honing is a low-velocity abrading process. Lapping is a final abrasive finishing operation that produces extreme dimensional accuracy, corrects minor imperfections of shape, refines surface finish and ...