Cut the front of the clock first. Be sure tenable and disable the tool paths based on what tool you are using for each piece of the carving. once you finish the front and cut the profile, remove the clock by cutting the tabs. Once the tabs are cut turn the clock over and put it back in the hold it made in the stock. Be sure to place the clock exactly the same orientation it was when you cut it. Line up the cut tab pieces on the clock and the remaining stock. Secure the clock with clamps or double sided tape.