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Selecting the appropriate pilot drill is critical to maximize performance and tool life of a succeeding deep hole or micro drill.

When using a high-performance drill, we do not recommend turning on coolant until the drill is inside a 1-2xD deep pilot hole.

Did you know Sphinx offers 3 unique drill/reamer geometries capable of drilling from a solid while achieving H7-H9 hole tolerance with exceptionally good surface finish?

Customers often get caught in a price war between cutting tool suppliers by attempting to reduce their total upfront investment in tooling.

Did you know we have a stand-alone catalog containing 14 precision micro end mill geometries?

Coated carbide micro deep hole drills manufactured by SPHINX Tools can reliably create wire EDM starter holes up to 5x faster than traditional wire erosion techniques.

The is no general rule to cutting tool shank insertion as a multiplier for shank diameter. All tool holder types have different requirements.