There are situations in turning when two different tools are loaded in the same tool slot. For example, two drills may be loaded with one facing the main spindle and the other facing the subspindle. Use the following steps to implement this tooling setup.
Program the part as if the tools are in separate tool slots.
Open the Tool mapping dialog box.
Set the Tool number of the two tools to the same number.
Set the Length offset register number to different values for the two tools in the same tool slot.