Flatten a complex surface

If I have a surface knit from a complex part that needs to bestuck to something else with .04" thick foam tape. Is there a wayto take that surface and flatten it to give me the size/shape ofthe die cut adhesive?

I found reference somewhere else on the forum to do this byinserting the surfaces into a new part, thicken it, and thenconvert it to sheet metal. The problem is; I have no linearsegments of the part, evreything is curved.

My end applications is basically an emblem/ornament that is stuckto a fender. I have the emblem and the surface of the fender, but Iwant to create a model of the adhesive tape between the two. And beable to dimension it.SolidworksSheet Metal