Glaze book
Finally, a book about glazes that uncovers everything. You’ll get a beautifully designed and highly informative book in which glaze theory and practice go hand in hand.
I am Sofie
I started with ceramics in 2016 and quickly became fascinated by glazes. As a scientist, I wanted to understand why glazes do what they do. I tested, failed, learned, and followed international workshops.
In 2019, I started teaching glaze workshops myself and noticed how high the barrier was for many ceramists: glaze theory is complex, and the available books are often only available in English or focus exclusively on recipes.
In 2024, I decided to write down my knowledge in a clear and structured way.
Glazes uncovered
Glazes uncovered is a practical handbook that gives a complete picture of stoneware glazes.
You will find not only stoneware recipes and hundreds of colorful glaze tests, but above all a clear explanation of:
- raw materials and their risks
- how to systematically test glazes
- how to optimize glazes for consistent results
- heatwork, kilns and firing
- glaze chemistry and developing your own glazes
- common glaze and clay problems and their solutions
It is a book for both beginners and advanced ceramists.
“Wow, I’m already completelyhooked! My expectations were high, but this book has far exceeded them. It’s incredibly interesting, packed with practical tips and fascinating insights.It feels like a complete summary of all the courses I’ve ever taken, clearly and conveniently brought together in one reference work.”
– Eline Bremeesch
“Such an interesting book. After taking your course, I was already inspired, but the book has made me even more eager to dive in. After five years, I finally understand some of the things I was told when I bought my kiln.”
– Karen Vanclooster
"Finally a glaze bible! Very clearly written and full of practical tips! I’m currently conducting my own glaze research with this book always within reach. A huge thank you for being willing to share your knowledge and experience with the ceramics community.”
– Arnaud Peeters
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pages
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removable and washable inserts with mixing schedules
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glaze samples
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base stoneware glaze recipes
Translations
After two successful self-published editions, it was time for the next step. Lannoo Publishers believed in the book and took on both the Dutch reissue and the translations.
The English (Glazes Uncovered) and French (L’émail en toute transparence) versions are available for purchase via the webshop, along with the Dutch edition.
Shop the glaze book in different languages
Corrections
The first print (November 2024) sold out within a month. In 2025, a second print was released with some design corrections.
Are you unsure which version you have? The front of the book clearly states which edition it is.
Second edition
Multimethod approach
- Page 120
- Part 4: Testing methods
The order of the samples is not as described. This figure shows the correct letter codes. You can also find the correct figure here.
First & Second Edition
Titanium oxide
- page 47
- Part 1: The Basics
At the top of page 47, red iron oxide is listed twice above the columns with samples. This should of course be titanium oxide. The percentages are correct.
Steel volumes
- page 101, 264, and insert
- Part 4: Testing methods
In the figure, the indicated volumes for sample 2 and sample 3 are incorrect. For sample 2, there should be a 0 in the dark green section where there is a 4 in the book. For sample 3, there should be a 4 in the dark green section where there is a 0 in the book.
Titanium oxide
- page 107
- Part 4: Testing methods
The text in the upper right corner next to the figure should read "0% chromium oxide," but the book lists it as "3% chromium oxide.".
Samples with cobalt oxide
- page 122
- Part 4: Testing methods
The samples labeled A (cobalt oxide) should, of course, be 0.15% and not 0.3% as listed. The explanation and example on page 121 are correct, however.
SrG Recipe
- page 250
- Part 9: Base Glazes
There is a typo in the amount of whiting: it should be 52.7 instead of 51.7 for the 1 kg column. The 10kg column is also incorrect as a result. The correct value for 10 kg is 527 instead of 517.
KristalG Recipe
- page 252
- Part 9: Base Glazes
There is a typo in the amount of zinc oxide: it should be 16.76 instead of 17.76 for the 100 g column. The 1 kg and 10 kg amounts are also incorrect due to this. The values should be 167.6 and 1676 respectively. In the same recipe, the digit 0 is missing in the 10 kg column for nepheline syenite. The correct number is 3510 instead of 351.