b'Figure 2 Figure 3superhard cutting materials like PCD or CBN; 3) an insert retain-ing screw; 4) a radial adjustment screw; 5) an axial adjustment screw; 6) a cartridge clamping screw; 7) a washer; and 8) an optional thread retaining element, or helicoil.The standard itself does not dic-tate cartridge design but only the main dimensions. Over time, how-ever, different manufacturers uni-fied to create a principal design, and this is why all cartridges look alike today.Over the past three decades, manufacturers have significantly improved the design and perfor-mance of machine tools. Spindles have become faster and more rigid. Accuracy has become higher. Com-munications and data acquisition systems have increased machine efficiency and output. Many break-throughs similarly were made in the development of new carbide grades and superhard cutting ma-terials. But cutting tool designsparticularly with ISO cartridgesare lagging behind this progress inAPPLICATIONSthe rest of the industry.oblique entry and exitsheet metalSeveral factors are especially out-curved entry and exithalf holedated (see Figure 2) and take away spot-facingo\x06set holefrom machine tool achievements:core drillingat-bottom holen Usingstandardsocketset-pilot drillingcross-drilled holescrews with a large pitch of thread creates adjustment resolution that is below that of modern demands. For example, for the cartridge 10CAwww.guhring.com(800) 776-6170(10 = distance to the cutting edge ctemag.com/cteguide.com45Inserts.indd 45 3/17/23 9:28 AM'