I think the industrial revolution changed the word's use by changing the context in which ordinary speakers ordinarily use it. In this specific case, the OP me

I think the industrial revolution changed the word's use by changing the context in which ordinary speakers ordinarily use it. In this specific case, the OP mentions factories...and that's another word that doesn't mean what it once did when "factor" was a common term for an occupational category. "Fabricate" is another interesting term that might be useful in this context as it suggests a mechanized workshop..."workshop" seems to fall into this space too. To me it seems scale is much of the difference between factory and workshop. That scale is probably industrial.