Some examples:

Barrel - top and bottom
Bloomery - front
Tool rack - back
Bellows - top and bottom

Turns out there's way more of these than I first suspected...

I'll probably start working on these soon.

The bottom of the crucible is also affected:

There's also some unnecessary culling on the inside faces of door windows, if we're putting all the culling errors here.

No idea why this is closed since not all missing cullface parameters were added.