This is a difficult question. I'm looking for any method to accomplish the following.
Starting from a existing sheet metal assembly. When a second assembly is brought it, I want the Second assembly automatically cuts holes in the other assembly.
When I try to set that up, I get an error message to the effect that the assembly cut can't use the sketch to cut with, because the sketch is not inside the assembly. Can't remember the wording.
In general, I'm looking for a cut feature to work on a level above where it was created so that it takes effect when that part is inserted.
The reason I want to do this is for product options. When an option is added, holes are added to the top level part. I am trying to automate that process.