Creating the boundary for the selected surface

Because it is only the cavity that must be finished by this toolpath, you can create a boundary for the cavity.

1. Undraw the 8 Ball_LS_TH tool by toggling the light bulb icon to in the Explorer.

   

2. Click View tab > Appearance panel > Block to undraw the block, and click View tab > Appearance panel > Wireframe to undraw the wireframe.
3. Use the mouse to select only the cavity surfaces.

   

   You can use the Home tab > Selection panel > Mode > Drag Select to select multiple surfaces.

4. In the Boundaries context menu, select Create Boundary > Selected Surface.

   

5. In the Selected Surface Boundary dialog:
   1. In the Name field, enter Cavity.
   2. In the Tool list, select 8 Ball_LS_TH.

   

6. Click Apply.
7. The boundary is calculated. By default, it's displayed in white.

   

   Selected Surface Boundaries are recalculated if the selected surfaces change. This means that they behave like toolpaths in the way they take account of the selection state at the time of calculation.

8. Click Accept to close the boundary dialog.