It is very convenient to use the Custom Sides option when defining a part with different parts on different sides of the tombstone. It is vital that the steps and counts are properly set for each side to ensure the proper output.
The following example is typical of a custom setup. The front and back of the same part are being cut on different sides of the tombstone. In this case the X Step is identical, but the Y Step is different. The Y spacing on side 1 and 3 (B0 and B180) is 270mm and the spacing on sides 2 and 4 (B90 and B270) is 215mm.
Example of a Custom Side setup