Well, I've so far had good luck with my two bowls.... if you had been following my last post with questions. here is what I came up with. They made it through the firing. There are some light cracks in them, but they hold water without any seeps. I very slowly heated them around a fire and progressively moved them closer. I finally slid them right onto the coals and slowly build the fire up around them. The fire burned right on top of them for roughly 1 1/2 hours maybe a little more..and sat in the coals all night until cooled naturally. As said they hold water great. They had a bit of a ring to them fresh out of the pit, but the ring deadened a bit when I "seasoned" them with some veg oil.... My biggest fear is that they are not heated all the way through. Since I've not done it before, I don't know what to expect. so what is the final test??? boiling water in them? is it a slow heated boil, or do i need to rock boil in them? they should be ok to slowly fire boil right? I just don't want to make any more moves on them until I know what to do and what not to do.