Glazy is an online platform designed for ceramic artists, potters, and glaze enthusiasts to share, analyze, and refine glaze recipes. Whether you’re a beginner looking for reliable glaze formulas or an experienced ceramicist developing your own, Glazy offers tools and resources to make glaze formulation more accessible and data-driven.
What is Glazy?
Glazy (https://glazy.org/) is a free online database and community for ceramic glaze recipes. It allows users to browse, upload, analyze, and share glaze formulas with fellow ceramicists worldwide. The platform integrates chemistry calculations, firing results, and visual examples, making it a valuable tool for both beginners and professionals.
Key Features:
- Extensive Glaze Database – Thousands of tested and categorized glaze recipes.
- Glaze Chemistry Analysis – Helps users understand and tweak glaze formulations.
- Firing Temperature and Atmosphere Data – Recipes include firing conditions such as cone level and oxidation/reduction atmosphere.
- User Contributions and Reviews – Community-driven insights with photos and feedback.
How to Use Glazy
1. Browsing and Searching for Glazes
- Visit Glazy.org and create an account for personalized features.
- Use the search bar to look for specific glaze types (e.g., glossy, matte, transparent, cone 6, oxidation, etc.).
- Filter results by firing temperature, color, surface quality, or ingredients.
- View detailed glaze recipes, including images, chemical analysis, and user comments.
2. Understanding Glaze Recipes
Each recipe typically includes:
- Ingredient List – Raw materials used in the glaze.
- Chemical Analysis – Breakdown of silica, alumina, and fluxes.
- Firing Details – Cone temperature and firing atmosphere.
- Photos and Results – Images of the glaze applied to test tiles or finished pieces.
3. Creating and Sharing Your Own Glazes
- Navigate to “New Recipe” and enter your glaze formula.
- Add details such as firing conditions, images, and notes.
- Utilize the built-in calculation tools to check the stability and balance of your glaze chemistry.
- Share your recipe with the community for feedback and suggestions.
4. Adjusting and Testing Glaze Recipes
- Use the Seger Unity Formula Calculator to understand the oxide balance.
- Compare similar glazes to tweak flux ratios or introduce colorants.
- Document your test results and upload images for future reference.
Analyzing Glaze Chemistry with Glazy
One of Glazy’s most powerful features is its ability to break down glaze recipes into their chemical components. By analyzing the balance of silica, alumina, and fluxes, users can adjust formulas to achieve desired effects while ensuring stability.
1. Understanding the Seger Unity Formula
Glazy automatically converts raw ingredient percentages into the Seger formula, showing the ratios of:
- Glass-formers (SiO₂, B₂O₃) – Essential for glaze structure.
- Stabilizers (Al₂O₃, TiO₂) – Control melt viscosity and durability.
- Fluxes (K₂O, Na₂O, CaO, MgO, etc.) – Lower the melting point and affect texture.
A well-balanced glaze has the right ratio of these components to ensure durability, melting behavior, and aesthetic quality.
2. Comparing and Adjusting Recipes
- Use Glazy’s comparison tool to evaluate different glazes side by side.
- Modify flux levels to control melting temperature.
- Adjust silica-alumina ratios to fine-tune glossiness or matteness.
3. Preventing Common Glaze Issues
- Crazing (fine cracks): Reduce the coefficient of expansion by adjusting silica and alumina.
- Pinholing/blistering: Ensure proper clay preparation and adjust volatile elements.
- Running glazes: Reduce flux content or increase stabilizers like alumina.
By leveraging Glazy’s chemical analysis, ceramicists can refine their glazes with scientific precision while maintaining artistic creativity.
Benefits of Using Glazy
- Reliable Recipes – Many glazes are tested and reviewed by experienced ceramists.
- Chemistry Insights – Helps users learn how glazes function on a chemical level.
- Community Collaboration – Engage with potters from around the world.
- Version Tracking – Save iterations of a glaze formula as you refine it.
Conclusion
Glazy is an invaluable resource for ceramicists who want to deepen their understanding of glazes, develop unique surface finishes, and collaborate with a global community. Whether you’re looking for the perfect transparent liner glaze or experimenting with new colorants, Glazy provides the tools and knowledge needed to elevate your ceramic practice.