If you have a 2D overview geometry aligned with the 3D model along X and Y, you can subtract it from the design, then disable that layer when cutting the 3D model, then enable and use only that geometry for a 3D Finishing toolpath.
Please see:
If you have a 2D overview geometry aligned with the 3D model along X and Y, you can subtract it from the design, then disable that layer when cutting the 3D model, then enable and use only that geometry for a 3D Finishing toolpath.
Please see: