At first, he used an epoxy specially made for ceramics, but after several years it would come apart, so he demanded of himself 100 % perfect firing, so that there would be no flaws at all.
剛開始他以陶瓷專用的 AB 膠黏著，但是幾年後仍難免脫膠，因此嚴格要求自己要百分百完美燒製，不能留下瑕疵。