Glaze Chemistry 101

Introduction to the wonderful world of Glaze Chemistry

Glass Formers



Basic Recipes and Bucket Level Testing


Glaze Chemistry 101

10 Week Glaze Chemistry 101 Course

In this course you will learn basic glaze chemistry – why glazes do what they do – what works, why it works, and why it doesn’t work.

You will learn about the raw materials, fluxes, colourants, opacifiers, and more

Glaze faults, why and how to correct them

Basic formulation and bucket level testing

Different types of glaze – atmospheric conditions, firing cycles, temperatures, and more….

The next course will be in 2020.


Week One

  • Introduction
  • What is glaze
  • What elements are required
  • Making test tiles
  • Gathering materials and equipment
  • OH&S
  • Materials Storage

Week Two

  • Glaze application – hydrometers, additives and more
  • Testing parameters and record keeping
  • Basics of formulations
  • Changing glaze tests at the bucket level

 Week Three

  • Clear glaze formulas – make two base glazes
  • Opacifiers
  • Fluxes
  • Colourants
  • Glaze additives

Week Four

  • Organic oxide (dioxide and carbonate, etc) colourants
  • Iron
  • Rutile
  • Yellow Ochre

Week Five

  • Cobalt
  • Chrome
  • Copper

Week Six

  • Manganese
  • Copper
  • Nickel

Week Seven

  • Using stains
  • Extemding the colour pallette – more materials

Week Eight

  • Adding opacifyers and fluxes
  • Formulating your own glaze recipes

Week Nine

  • Combining Glazes
  • Repurposing glazes
  • Glaze faults and correcting them

Week Ten

  • Review
  • Final samples
  • Discussion on where to from here…

There is no avoiding chemisty when dealing with glazes, however, we have kept this course relatively simple! YOu will be amazed at how much you can look back on your learning and discover better ways to make and use your own glazes, and extend/understand commercial glazes!

Please indicate your interest in the Glaze Chmeistry 101 Course using this form


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