There was a previous question suggesting that the support and support-materials tags should be merged, and at the time the only response was to keep them distinct. 2 years later, I think it is time to disagree.
I've already found questions which talk about support material in the abstract sense, of how to slice, rather than the intended use of the tag to identify the specific material used for support. This automatically makes the tags too imprecise to retain.
We should retain the support tag, and merge the other two into it, since that covers the whole group of questions cleanly. I don't think we need synonyms, unless the other tags get re-added by users in the future.
I don't think the aim of tags is to generate a complete literal taxonomy of the subject, rather we are trying to define:
- What subjects are on topic (support certainty is)
- How to most usefully group questions.
Now, support (the structure) and the types of material are literally different things,but together they encompasses the topic of support. There is nothing wrong about referring to the specialist filaments as support. It is also misleading to assume that the structure can be discussed in isolation from the potential materials which can be used.
Along the lines of avoiding the highly complex suggested heirarchical filament taxonomy, I think we can best help people to find questions about support by consolidating the questions under a single tag.