Center bits do not cut well in the end grain of Wooden. The central screw has a tendency to pull out, or to separate the Wooden alongside the grain, as well as the radial edges have problems reducing with the long Wooden fibers. A 5 mm carbide bit displaying shallow https://drill-bit-supplier15936.blazingblog.com/34313810/the-smart-trick-of-drill-bit-supplier-that-no-one-is-discussing