This sounds a bit like the fine distinction between a model and a product. Perhaps the base level of human creation is braincraft, followed by the larger branches of nocraft and physicalcraft. Nocraft is simply finding an object in nature that can be used for some purpose. Physicalcraft leads to the additional branches of handcraft and toolcraft and machinecraft. Handcraft would be something simple like finger painting or molding a lump of clay into a cup. Toolcraft requires simple "hand" tools like a stick or rock to break or form something, although it's something that some animals without hands can also do (generally food related). Machinecraft requires things such as electric drills or even 3D printers that have more capability than basic human powered tools. A machine performs a major task with a minimal amount of human physical effort, or something that is beyond the capability of a human with a good set of hand tools.
But now we return to the idea of 3D modelling. Where do we stick that? Does it go into its own branch or is it simply a part of braincraft? Or is it a sub-branch of machinecraft? You do require a computer to do 3D modelling unless you are some kind of numeric savant, and arguably a computer is a machine-tool. So it might be logical that the branches coming off of machinecraft are manually-controlled-machines and data-file-controlled-machines. 3D modelling could simply be an inherent and necessary component of a data-file-controlled-machine. If you had enough time and beer at your meetings you could subdivide the finer branches into types of data-files and 3D modelling software and file formats, but I don't recommend you spend the time on that.
If you're still at your meeting and drinking beer you may also consider that a tree structure is not the absolute best way to classify all this stuff. A complicated flow-chart might also work since creation and production can be highly cross-hybridized with branches looping back and forth and reconnecting in various places. And if you begin to contemplate machines themselves generating 3D models for their own use you're going to need a few bottles of vodka in your meeting. That's going to require a big time revision of the charts, as in Skynet big time.
Last edited: May 26, 2016