Over 100 pinch pots in one week...I'm tired of clay! Have I said that yet? So we had one explosion...not sure why, yet. I'm guessing it was all the air bubble's fault. Some pots were underglazed pre-fire....and some got bisque fired then underglazed...I was experimenting and didn't notice a difference. Also need glaze-free bowls for firing 2nd grade's fossil pendants and beads. I really really like them though. So in the end, it was alllllll worth it.