Optimize Depth of Cut and Stepover for Better CNC Milling CNCCookbook
Cut Width, also called Stepover, is the total thickness of the cut when viewing the cutting tool from above. It can be no more than 100% of the cutter's diameter. Stepover is also referred to as Radial Depth of Cut. For the sake of completeness, Cutting Speed is defined as your spindle speed (in rpm) in the cut.