Birla kennametal supplies copiball for contour finishing and super finishing operations. They use high-speeds during the finishing operations. A copiball for contour finishing can also impart high accuracies to the tune of ±10-20 microns. As there are two cutting edges to the inserts, which meet in centre and contribute constant face on the insert, a copiball for contour finishing permits double feed as compared to single edge insert. The diameter range available is from 8 to 32 mm.
