b'Mod Squadwhen changing a head.Thats nice not worrying about losing the screws, he said.In addition to its Ultra-Dex pro-prietarydesign,henotedthat ARCH Cutting Tools offers two in-dustry-standard models.BIG Daishowa reports that its modular boring systems use CK, CKB and CKN connections. CK provides a runout of 0.0051 mm (0.0002") and consists of a cylindri-cal male pilot and female recept-able, and the connection is madeA cutaway shows a modular boring bar in the cut. Parlecby means of a radial locking screw with a 15-degree taper. CKB is de- mating part. gives additional rigidity to the tool rived from CK without loss of tech- The CKN connection is almostconnection.nical and dimensional features or100% compatible with CKB and isCKBisthesingle-set-screw interchangeability. The CKB con- based on a three-screw connection,connection with a floating CKB nection is equipped with a floatingaccording to the company. By tight- pin for torque transmission during drive pin, which engages on bothening the three screws, the slot- heavy cuts, Tegelman said. CKN sides into respective pockets in theted male connection expands anduses three connection screws and 26JANUARY 2023 HoleFinishing.indd 26 12/15/22 1:35 PM'