How to build a part for 3D printing and post-machining

For CATIA, I have a part that I will additively manufacture out of metal, and I wish to have, in the same file, the as-printed and as-machined files, such that I can just deactivate one (or similar) to get the STL for the as-printed file and then also be able to produce the drawing for the post-machining. What would be the best method to do this?