Using the Grid Method
About the Book
From the author of "Stoneware Glazes - A Systematic Approach"... a new book in which the recipe-based grid method is laid out fully for the first time.
For the beginner keen to know how glazes work and for the experienced ceramic artist, this book takes one through the method in clear language.
Without the need for complicated maths or chemistry it provides deep inssights to fundamental glaze principles while revealing exciting new glazes.
What is a Glaze?
- Ian Currie’s Blue-in-the-Face Chemistry Course.
- Raw Materials
An Approach to Studying Glazes
- Some Standards
- Extending the Range
- What is a Glaze?
1 Gradients and Variables
- The Holy Grail
- Line Blends
- Biaxial Blends
- Blending and Trending - A Puzzle
2 Outline of the Grid Method
- The Standard Grid
- Starting Point
- Varying Alumina and Silica
- The Standard Recipe Grid (base glazes)
- Working out the Flux Material Breakup
- One Glaze Recipe Explains the Whole Set
- Colourants and Opacifiers in the Standard Grid
- Revealing Glaze Principles
3 Choosing a Starting Point
1. Example Sets
- Glaze C Recipes
2. Rules of Thumb for Choosing a Flux Set
- Broad Principles
- Table - List of Flux Materials
- Advanced Principles
- Divine Joke
3. Family Set
- To get Glaze C:
- Developing the Set Further
- 4. Random Choice
- 1. Example Sets
4 Working Out the 35 Glaze Recipes
- 1. Using the Calculations Page at the web site.
2. Using the Flux Breakup Tables
- The Recipe Table
- 3. Using the Recipe Grid Diagram.
- 4. Glaze Calculation Software
5 A Guided Tour
- Isolating Variables
- Standard Limestone Set (The 0.7 Limestone Set)
- Corner A - High Alumina
- Corner B - Low Flux
- Corner C - High Flux
- Corner D - High Silica
- Magnesia Glazes
- Strontium Glazes
- Barium Glazes
- Zinc Glazes
- Feldspathic Glazes
- Alkaline Glazes
- Volumetric Addition
- Clay Body and Firing
- Using the Grid
- Family Set
- Exploring the Limits
6 Preparing, Firing and Assessing a Grid Set
Glaze Preparation - Volumetric Blending
- 300 gram Batch Recipes
- Preparing the Four Glazes
- Blending to Produce the 35 Glazes
- Precautions in the Preparation Stage
Applying the Glazes to the Grid Tiles
- Adjusting Water Content
- Glaze Application
- Applying Colouring Oxides (Optional)
Firing the Grid Tiles
- Firing Type
- Virtually Identical Firing Conditions
- Bring out the Differences
Assessing the Results
- Assessing Glaze Fluidity from the Grid Tiles
- Dealing with Runny Glazes
- The Next Step
- Unusable or Dangerous Glazes
- Glaze Preparation - Volumetric Blending
7 Volumetric Addition to a Set
- A new set of glazes with very little effort
- Addition Procedure
8 Using the Grid Method with Natural Materials
- Wood Ashes
- Rock and Mineral Materials
- Alumina etc.
- Quartz, Silica, Flint
- Using Natural Materials in a Standard Recipe Grid.
Appendix 1 Equipment and Materials
- List of Equipment and Materials
- Glaze Materials
- Making Grid Tiles
Appendix 2 Safety and Health
- My First Glaze - A cautionary tale
- Legal Obligations
- Hazards from Raw Materials
- Non-poisonous Materials
- Utilitarian Risk
- Occupational Health and Safety Resources
Appendix 3 Useful Maths and Chemistry
- Reading a Chemical Formula
- Some Raw Materials
- Three Ways to Look at a Glaze
- Oxide Weight %
- Seger Formula
- Comparing Recipe and Seger Formula for 3 Standard Recipe Grids
- Reformulating Glazes
- Chemically Identical Glazes from Different Materials
- Essential Maths
- Percentage Calculation:
- Ratios and Proportions
- Volumetric Addition to a Set
- Loss on Ignition - Calcining Calculations
- Calculating L.O.I.
- Calcining Calculations
Appendix 4 The Recipe Table and Flux Breakup Tables
- 1. The Recipe Table
- 2. Flux Breakup Tables
- Appendix 1 Equipment and Materials
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