Inheritance Features in Sheetmetal Design
Click > > to access the Merge/Inheritance feature tool. Keep in mind the following points when creating an inheritance feature:
• The Merge feature and other Assembly-specific functionalities are not available in Sheetmetal Design.
• Unbend, Bend Back, and Flat Pattern operations, performed on geometry copied to the target part, use the developed length and other sheet metal specific properties defined for the copied part for their calculations. You can change these values using the Varied Items dialog box.
• While in Merge/Inheritance mode:
◦ Using the 
Add Bodies option, you can copy a solid geometry to a sheet metal part.
Add Bodies option, you can copy a solid geometry to a sheet metal part.◦ Using the 
Merge option, you can copy a solid geometry with the same thickness to a sheet metal part.
Merge option, you can copy a solid geometry with the same thickness to a sheet metal part.◦ Using the 
Cut option, you can perform the following operations:
Cut option, you can perform the following operations:▪ Create sheet metal cuts that remove solid material from the sheet metal wall, normal to the driven or to the offset surface, or normal to both surfaces.
▪ Create solid cuts that remove solid material from the sheet metal wall, normal to the sketch plane.
◦ Using the 
Intersect option, you can perform the following operations:
Intersect option, you can perform the following operations:▪ Create sheet metal cuts that remove solid material from the sheet metal wall, normal to the driven or to the offset surface, or normal to both surfaces.
▪ Create solid cuts that remove solid material from the sheet metal wall, normal to the sketch plane.
• Only a manually assigned value for developed length can be changed in the Varied Items dialog box.
• If the target part contains a first wall, then the reference part must have the same thickness defined for any sheet metal geometry.
For more information on Inheritance, search the Assembly functional area of the Help Center.