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The GMauvaisUSA micro drill line from Hassay Savage is said to provide increased precision and consistency. Standard product sizes range from 0.1 mm (0.0039") to 3 mm (0.118"). HSS-E 8-percent cobalt and 10-percent micro-grain solid carbide drills are offered in the center-pilot-spot, 4-5×D, 5-7×D and 6-7×D high-performance (HP) series. Custom products are also available.
Editor PickHitting the Coolant Sweet Spot
Toolholders with integrated cutting fluid delivery channels offer threaded, fixed-position nozzles that direct parallel streams of coolant to pre-defined positions at the top of the cutting tool.