A pilot or spot drill, also known as a starter drill, is typically required when the succeeding drill is longer than 10xD or smaller than Ø 1.00 mm. Starter drills can also be used to improve hole location due to their short, rigid geometries.
Tool holders play a critical role in connecting elements maximizing machining performance, however, several different styles are available and the most suitable one will depend on the operation.
BIG DAISHOWA introduces the newest addition to its SPHINX micro drill line. The new drill, made of fine-grained solid carbide, delivers exceptional tool life and consistent process reliability.
The MGT3 series is designed for very small tap sizes. The MEGA Micro collet controls dynamic runout accuracy providing stable thread quality and extended tap life.