Z-Bottom

1. Rerun the stock and change it back to Bounding Box type.

2. Check the Z Limits parameter and select Bottom Only.
   Enter Z-Bottom value = 0.
   
   The lowest Z level for milling remaining stock has been set.

3. Save and calculate the procedure.
   

4. Rerun the procedure. Set the Z Bottom to 10 and the Fixed Vertical Step (down step) to 15.
   

5. Save and calculate the procedure.
   The machining should reach the Z = 10 (the remaining stock of the part).
   
   However, due to a Part Surfaces Offset of 0.5, machining does not start here due to a gouge detection and hence starts 15 mm higher (the Fixed Vertical Step).
   

6. Edit the procedure and change the Z-Bottom value to 12.

7. Save and calculate the procedure.
   
   The surface is now machined as the Z-Bottom value is above the remaining stock and offset value set.