Online Classes and Workshops with Sue
Glaze Mixing Essentials
Learn how to mix your own glazes from scratch and do a Colour Run by testing a base glaze with multiple colourants in this online workshop.
Glaze mixing is a foundational skill that will enhance your creative potential, save you money and increase your understanding of the materials you're working with.
Instant access plus a live Q&A session on Zoom every month for 6 months.
Price: $127 USD
Mastering Glaze Consistency
A 4-week, online program that will teach you how to get the best glaze results possible with your existing glazes, and repeat those results from firing to firing.
Learn my system for measuring specific gravity, flocculating and/or deflocculating your glazes to improve application and fix many glaze flaws like running, crawling, glazes turning out the wrong colour, cloudy clears etc.
Registration currently closed until Aug 2022.
The Art of Glaze Chemistry
Learn how to use glaze calculation software to analyze and adjust your glaze recipes so you can adjust melting temperature, change surfaces between matte, satin and glossy, and fix glaze fit issues like crazing/shivering/dunting.
Explore how base glaze composition affects colourants so you can design the unique glaze palette you've been dreaming about.
This is a 9-week program that takes a deep dive into the science behind how glazes are composed so you can develop the best glazes for your work. No previous chemistry knowledge required.
Registration currently closed until Oct 2022.
Free Guide
Do you have these glaze challenges?
- You don't know how much water to add to your glazes
- You get different results every firing
- Your glazes aren't turning out as expected
- You can't seem to keep your glaze thickness consistent
Grab my FREE GUIDE
You'll start understanding your glaze results better when you measure specific gravity. It just takes a few simple steps to calculate the water content of your glazes and then it's easy to keep them consistent. No more guessing!
Consistent water content = consistent application thickness = consistent results.
Sue’s Ceramics Blog
Articles and videos about clay, glazes and studio tips, written by Sue McLeod
Glazy Demo – Adding Recipes and More
Do you use Glazy.org to store/share your glaze recipes? If you’re just hearing about Glazy for the first time, you should definitely go check it out. It’s a ceramics recipe website that allows you to store recipes with photos, share them with the community and analyze the chemistry/UMF of your glazes, all in one place.
Why Specific Gravity Isn’t Listed on Glaze Recipes
If you’ve been glazing for any length of time, you may have heard about the importance of measuring the specific gravity of your glazes and you may have found yourself wondering: “If it’s so important to measure specific gravity, why aren’t specific gravity values published on glaze recipes?”
5 Reasons Why Your Large Batch of Glaze Doesn’t Match Your Test Batch
Has this ever happened to you? You mix up a test batch of a new glaze, dip a test tile and you like the result, so you mix up a large bucket, dip a test tile and your results look nothing like your test batch?
A Potter With a Paycheque?
This post is based on an email I sent out this past Fall about my journey from a struggling studio potter to starting my dream job as a studio technician to reluctantly growing out of that position and quitting my job in order to teach online classes full time.
A Clay Reclaim Process Using a Pugmill/Clay Mixer
If you run a community studio or your personal studio is high production, you probably have a lot of clay scraps to deal with. This article will describe the clay reclaim process we use at the very busy pottery studio where I worked as technician for 6 years.
How to Make a Cone Pack
In this post, you’ll learn how to make a cone pack using pyrometric witness cones set into a coil of clay. Cones are important for measuring the heatwork of your firings.
Commercial Glazes vs Mixing Your Own – A Cost Comparison
This post will give you an idea about the differences between commercial glazes and mixing your own from cratch.
Troubleshooting Commercial Underglazes
Have you experienced issues with commercial underglazes? Participate in my underglaze research project and help me find solutions for underglaze firing defects.
99 Cone 6 Glazes You Can Try
Have you been looking for new glazes to add to your glaze palette? If so, I have 99 different cone 6 glazes you can try. That probably sounds like a lot to look through, but it’s really just 9 base glaze recipes plus 10 colour variations each.
The Air Bubble Myth
There’s a common belief in ceramics that leaving pockets of air in your clay, either due to insufficient wedging or by creating an enclosed form, leads to explosions in the kiln. The belief is often communicated in these ways: “Poorly wedged clay containing air bubbles will explode…”
What Glazes Can You Make with Limited Materials?
When you start looking for glaze recipes and have a limited number of materials on hand, you may find that you have almost (but not quite) all the materials for a million glaze recipes, but you can’t find a recipe that only uses the materials you currently have.
How to Measure Specific Gravity – Clay Week 2020
Here's a live demo of how to measure the specific gravity of your glazes so you can have more consistent results. Measuring specific gravity is a way to calculate and control the water content of...
12 Tips for Managing Glazes at a Busy Pottery Studio
Glaze Management 101. It’s a lot of work to run a school or community pottery studio. There are a lot of moving parts to look after. I’ve been a studio technician for 5 years now and it’s a very busy and rewarding job. As the technician, I’m taking care of all the behind the scenes…
How to Fix a Hard-Panned Glaze with Epsom Salts
Have you ever had a glaze settle into a rock hard layer on the bottom of your glaze bucket? It’s impossible to mix and even if you do get it mixed, it just settles out again. This annoying phenomenon is called “hard-panning” and it often happens to glazes that don’t have enough…
How the Water in Your Glaze is Affecting Your Results
Does any of this sound familiar? You unload a piece from the kiln and the glaze turned out perfectly! So you glaze more pieces with the same glaze combination, fire them, and they turn out completely different… OR… You mix a small test batch of a glaze and LOVE how it looks…
A Week in the Life of a Ceramics Studio Technician
What Does a Ceramics Studio Technician Do? Since 2015, I’ve been a ceramics studio technician at a community pottery studio. We run 14 classes per week for both adults and children. We also have an open studio drop-in program where 60 registered members can…
How to Make a Saturated Epsom Salt Solution to Flocculate your Glazes
Flocculate… What Does That Even Mean? You may have heard this term “flocculate” in reference to glazes and thought it was a funny word but you’ve never really known what it means. Or you may have been told what it means several times and still…
Getting Clarity with Clear Glazes
There’s nothing worse than a cloudy clear glaze muddying up your beautiful slip design, screen printed images or coloured clay. How can we make sure our clear glaze is always clear and prevent it from going cloudy? In this article, I’ll explain some of the factors that affect the…
What to Keep Track of in Your Glaze Journal
How Magic Becomes Science. Have you ever unloaded a BEAUTIFUL piece from the kiln and thought, “Gee, I wish I could remember how I did that”? A big part of glaze testing and advancing your understanding of glazes is record keeping. Whether you’re dipping test tiles or…
Different Styles of Test Tiles You Can Make for Glaze Testing
The word “test tile” can refer to any shape of clay that’s used to test glazes, slips, underglazes, engobes etc. Test tiles can be any shape you wish and can be made in a variety of ways. In this post, I’ll share lots of different examples of ways you can…
15 Tips to Get Started with Glaze Testing
I find ceramic glazes to be absolutely fascinating. I had no idea when I started working with clay that glazes would become the main focus of my life. Glazing was always an afterthought and I basically ruined most of my pieces by glazing them…
How to Calibrate Your Kiln Sitter for Accurate Firings
If you’re anything like me, then your first kiln wasn’t or isn’t going to be the digital programmable kind. Many of us start out with a manual kiln that we got second hand. I have 4 different sized kilns in my home studio and none of them are digital or programmable.
A Low Tech System for Recycling Clay Scraps
As clay artists, we’re so lucky that we can reduce the amount of waste we produce by reclaiming or recycling our unfired clay. When we make something that cracks, warps or doesn’t look how we wanted it to, we can reclaim our clay, bringing it back to its original state so…
How to Make a Good Kiln Wash to Protect Your Kiln Shelves
Kiln wash is a material that you can paint onto your kiln shelves. It looks very similar to a glaze when being applied. It acts as a barrier to prevent unexpected glaze runs or drips from ruining your shelves. Kiln shelves are made of a hard material that is similar to…
Publications
Technofile: Air Bubble Myth
Published in Ceramics Monthly – Apr 2021
Click here to download this article and join my newsletter.
Originally published in April 2021 issue of Ceramics Monthly, pages 54-55. http://www.ceramicsmonthly.org
Tips and Tools: The Kiln Sitter
Published in Ceramics Monthly – Nov 2020
Click here to download this article and join my newsletter.
Originally published in Nov 2020 issue of Ceramics Monthly, pages 60-61. http://www.ceramicsmonthly.org
Technofile: Hard Panned Glazes
Published in Ceramics Monthly – Oct 2020
Click here to download this article and join my newsletter.
Originally published in March 2020 issue of Ceramics Monthly, pages 90-91. http://www.ceramicsmonthly.org
Technofile: Bentonite
Published in Ceramics Monthly – March 2020
Click here to download this article and join my newsletter.
Originally published in March 2020 issue of Ceramics Monthly, pages 62-63. http://www.ceramicsmonthly.org
“O La Fuente”
by Sue McLeod
Published in 500 Teapots – Volume 2
Page 257
"Understanding Cone 6" - Pittsburgh 2018
My NCECA presentation Understanding Cone 6 is all about using glaze chemistry, the Unity Molecular Formula and the Stull chart to understand how different surfaces are created at cone 6.
Which glaze formulas are likely to be matte or glossy? Which ones are likely to be crazed or be under-fired? How does flux ratio impact fired results?
Click here to read or watch/listen to this presentation on my website.
Understanding Cone 6 presentation slides and script are also available as a free download!