Cutters of this way aspect had been the earliest milling cutters formulated. In the 1810s to at least the 1880s they were the commonest form of milling cutter, whereas today that distinction likely goes to finish mills. Usually, HSS aspect and confront cutters are utilized to mill slots and grooves. https://clay-cutters89620.kylieblog.com/16803015/the-best-side-of-polymer-clay-earring-cutters