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What is Glaze?

Published in Pottery Glaze 2 mins read

A glaze, particularly in the context of pottery, is a thin layer of liquid applied to an object that hardens and becomes shiny when fired at high temperatures.

Understanding Glaze

Based on the definition, a glaze can be understood through several key characteristics:

  • Form: Initially, it exists as a thin layer of liquid.
  • Application: This liquid is applied onto a piece of pottery.
  • Transformation: The fundamental change occurs when the pottery, with the glaze applied, is heated in a very hot oven, typically called a kiln.
  • Result: Through this heating process, the liquid layer undergoes a chemical and physical transformation, becoming hard and shiny.

This process results in a finished surface that is not only durable but often highly decorative.

Glaze in Practice

Glazes serve multiple purposes in pottery and ceramics:

  • Aesthetics: They add color, texture, and a glossy or matte finish, enhancing the visual appeal. As the reference notes, they can be used for decorative glazes, such as on hand-painted French tiles.
  • Functionality: Glazes can make pottery non-porous, allowing it to hold liquids (like cups or bowls) and making it easier to clean.
  • Durability: The hard, fired surface provides protection and strength to the underlying pottery.

Key Characteristics from the Reference

Characteristic Description
State (Initial) Thin layer of liquid
Applied To A piece of pottery
Transformation Becomes hard and shiny
Trigger Heated in a very hot oven (kiln)
Result/Function Decorative glazes (e.g., on hand-painted French tiles)
Synonyms coat, finish, polish, shine

Glazes are essential to the art and craft of pottery, turning simple clay forms into functional and beautiful objects.