tanning tubs consume the tanning fluid per piece of fur instead of per leather. i can put 4 rabbit furs into a tub and go through almost half the fluid versus one aurochs hide and use comparably little
not a big thing just makes all the small hides want to turn into string then large into leather. i prefer it this way than to make it per leather, having to refill tanning tubs is annoying. just wanted to bring it up