Hi, I wondering how this crack appeared in my finished gas kiln fired bowl? I have put up a photo..........the clay is grog 5 porcelain and yes it was formed somewhat thin......but I am noticing that it appears to be a fairly clean crack.......not as raggedy as normally appears in finished pieces. There was no sign of stress after bisque firing.
So any input would be most interesting to me. Thanking you in advance CGB