b'Inside Insertswith various levels of hardness andtoughness.Whilemany grades of HSS and brazed tools are available, inserts are manufac-tured in countless grades and new grades are continually added, giv-ing far more options to users than HSS or brazed technologies.The Incredible InsertInserts also provide advanced chip control geometries that canThis is one of the largest be paired with a specific substratedrills at Mitsubishi and coating to further enhance toolHitachi Power Systems performance. Previously, HSS andAmericas. The drill uses brazed tools required users to addthree inserts, and about chip grooves to the rake face if chip10 minutes is needed control was necessary. This addedto change all three. A special piece of grinding to the complexity of reconditioningequipment and several and often was done by hand, whichhours would be required provided varying results. With in- to sharpen an HSS drill serts, users can open a tool manu- this large. C. Tate64JULY 2019 Inserts.indd 64 6/13/19 4:12 PM'