Like other knives, the tip has a curvature, only this one is as big as yours. See how you align with tools. If you use it to turn an arc, it goes without saying that in the X direction, you know, in the Z direction, the tool is aligned: the tool surface is close to 0 point, and the value of the blade radius is entered. Remember that z0 is in the center of the blade. If you have any questions about CNC, please ask.