I was playing around yesterday with the plate forging (love it btw), and I noticed something of an oddity. The crucible in the ebony arch (maybe door?) gets damaged each time I would use it. I'd use my salts, make an ingot, and then appraise and it'd be just a step below perfect condition.
I went and tried in the willow arch, and the issue did not replicate itself. I don't know if it was a fluke or what, but I cleaned the offending crucible probably 4 or 5 times, whereas the willow had no damage at all after multiple ingots.
I noticed it because my ingots were coming out as outstanding opposed to masterfully.