The reverse engineering of simple inventions that were of historic significance is now possible in a classroom by using digital models provided by places like the Smithsonian. The digital models can facilitate the mastery of students' STEM learning by utilizing digital fabrication in maker spaces to provide an opportunity for reverse engineer and the creation of working models of the inventions. Students can start with understanding the original design, and then modify it to create working replicas and proximities showing the understanding of the underlying STEM concepts. [For full proceedings, see ED571332.]