It's not really on "option" in CAM software.
There are 2 main types of controls and methods for controlling a CNC machine. The first type, and this is found in the low end GRBL, kosi, DIY crowd is to simply produce XYZ code. There is no adjustment that can be made in the control to adjust for tool size, wear, part deflection, etc. It's all in the code. If you need to adjust it, you go back to Fusion, make your adjustments and post out the code again.
The other, more common, flexible and more powerful control system is found in more commercial applications such as Haas, Fanuc, Siemens, Mitsubshi etc.
While there are a few "DIY" control options that employ these same approaches (Mach3, LinuxCNC) it tends more to the commercial side. This method injects certain bits of code into the program. This is the letter values of T and D. T is your tool offset where you define (in a manner) the length of the tool. This could be the distance from Z zero to the top of the part, or simply the gauge length of the tool and toolholder. This is dependent on the machine configuration and what options are available. The "D" address allows you (in the control) to adjust the size of the tool to adjust for blends, part size etc. This is typically expressed in the control (not Fusion) as either half the diameter of the tool (Control Compensation in Fusion) or simply left at a value of zero (Wear Compensation setting in Fusion)
If this is something you have never touched, and you've not had any issues, I would suspect that you are running a machine described in my first paragraph. I'd just continue running as you are, as it most likely wouldn't apply to you. Out of curiosity, what ARE you running, what control, what machine, and you've successfully run parts?
Seth Madore
Owner, Liberty Machine, Inc.
Good. Fast. Cheap. Pick two.
