I would like to create a sculpture, related to science and technology, using engraved diagrams of physical processes on the surface. Some of these diagrams I will produce myself, many are in the Public Domain, but some are available under the CC BY-SA license. My plan was to simplify them to some degree before engraving on the sculpture. I would also produce a freely available PDF document providing all of the attributions and hyperlinks to satisfy the license conditions, as well as guiding the viewer/reader to more information about the depicted subject.
One problem is that many of these processes (i.e. chemical reactions, energy levels etc.) are very fundamental and the available diagrams succinctly describe the process. An attempt by me to produce my own version from scratch would result in an almost identical diagram. This brings the spectre of plagiarism were I to try producing and using "My own" version of the diagram and still hyperlinking to Wikipedia pages, where not only is the relevant, easily understood information on the process but also the "original" diagram.
The CC BY-SA license allows "Commercial Use" but am I going to run into a copyright stumbling block here if I use these diagrams and try to sell the sculpture? Would the "ShareAlike" clause only apply to my simplified versions of the diagrams or the sculpture itself?
Any help would be greatly appreciated.