The castings held up great, The only noticible wear is the discoloration from the heat and fire. The actual castings are just as good now as when they were first cast. No deterioation from the first winters use from a stove, that during the cold ran 24 hours a day. The pictures show the burn package as it sits in the stove and the other picture is of the three individual pieces that were cast, The package is held together and in place by the metal sealing plates on the sides of the stove. I also noticed no difference in the performance of the stove, which initially was of a concern to me. It performs just as it did with the other burn package. Im going to pull some silicone molds off of the castings so I can easily duplicate them if the casting material does not hold up and I need to get a better product. Maybe a little to early to claim success, but as of now I am very pleased with it.