Ceramic - Pottery Dictionary

by Susan Mussi

LEACHING

ca: ESCÓRRER

es: ESCURRIR

Leaching occurs when glazes being fired react incorrectly. A glaze can turn into a liquid, run and adhere to everything it comes into contact with, other colors, kiln furniture and walls. The word leaching comes from the name of a worm “leech” which reacts in the same way; it adheres to another living body. If you have seen that great film African Queen you will understand the meaning very well.