Drilling accurate holes o round stock can be a big challenge.
Using micro spot drills can improve hole location and tool life of a deep hole drill or micro drill.
This video shows an easy way to do it with precision on brass pieces.
Nine9 X060A90 Micro carbide spotting insert geometries are short to optimize rigidity and accuracy with a point angle to guide micro drill towards the hole's centerline. It produces a consistent surface for micro drill to enter the workpiece especially for round, angled or curved surfaces.
X060A90 Micro carbide spotting insert has different coating, not only can spotting on non-ferrous metal but also spotting for all kinds of steel, cast iron and hardened steel up to 56 HRC.
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