Hey, I recently opened tabletop.place as a go-to non-generalized instance for communities dedicated to stuff like that. There is currently a 3D printed minis community there that may begin to be what you’re looking for.

I havn’t seen one yet, but feel free to post about that here if you’d like. This place is for anything even tangentially related to DnD

tabletop minis I don’t know if I linked this correctly, I’m still figuring out this place. Edit: it’s tabletopminis@lemmy.world