Answer: fritts

AnswerCrossword Clue
frittsFRITT, to fuse ceramically, also FRIT
frittsto fuse (materials) in making frit
frittsfused or calcined material prepared as part of the batch in glassmaking
frittsa. fused or partially fused material used as a basis for glazes or enamels b. the composition from which artificial soft porcelain is made