The Glazy database of ceramic recipes was seeded with data from Linda Arbuckle's GlazeChem database, John Sankey's glaze database, and Louis Katz's Hyperglaze database. John Britt, Alisa Liskin Clausen, Terry Rorison and Tara Hagen have also included their glaze tests with images.
Glazy is a work in progress. If you notice a bug or have an idea to improve Glazy, please contact us here.
The best way to support Glazy is to use it! Uploading images of glazes, verifying existing recipes, and sharing your own recipes helps Glazy become a more trustworthy source of ceramics information.
Glazy will always remain open and free. But the servers that Glazy run on are not free. Currently, the Glazy servers cost $50 USD per month (including one VPS web server and one VPS Mysql server). If you would like to help offset the cost of these servers, just click the Paypal "Donate" button below.
From July 2015 to August 2016, Glazy servers cost $32 USD/month. During that time Glazy received 15 donations totalling $409 USD ($389.76 USD after PayPal fees), paying for 94% of server time.
For the twelve months from August 2016 until August 2017, Glazy's servers will cost $600USD. For this time period, Glazy has received $1075 USD in total donations ($1027.94 USD after PayPal fees), paying for 20.56 months (171%) of server time.
New Costs for 2017: The Ceramics Wiki is an experiment to see if we can collaboratively build a ceramics knowledge-base. The Wiki is built with Discourse and is hosted on a separate server from Glazy. The Wiki server costs $40USD a month, or $480USD per year. Any extra donations to Glazy will be applied to the cost of the Wiki server. For the combined Glazy and Wiki server costs, donations have paid for 95% of server time.
Updated: 3 September 2017
To make a one-time donation to Glazy using Paypal:
Glazy does not sell any product or service or benefit financially from providing the information on this site.
Ceramic Materials Workshop is a place online to understand and explore how and why our Clay and Glazes work (and don't work). Our materials speak for us in the kitchen and gallery, it benefits us to learn about how to speak through our materials. Mastering the skills of clay and glaze performance helps every ceramicists, become their best self in the studio. Ceramicists at all levels can now learn how Clay and Glazes function, online.
John Britt is the author of the “The Complete Guide to High-Fire Glaze; Glazing & Firing at Cone 10”, and his most recent book “The Complete Guide to Midrange Glazes: Glazing and Firing at Cone 6”. John has also released ebooks and video tutorials, all of which can be found on his website.
Many of the recipes in Glazy have been published in books. Please support the potters who originally researched and published these recipes by buying their books. Apart from John Britt's books (linked above), some of the books referenced on Glazy are:
Glazy takes no responsibility for the recipes in this database. You should be aware of the dangers of ceramics materials when mixing, applying, and firing glazes. Recipes in this database contain dangerous chemicals that can injure or even kill you through short-term and long-term exposure when ingested, inhaled, or absorbed through the skin. Even after firing, glazes can leach toxic chemicals into food and drink. Ceramicists making functional ware should be especially vigilant in ensuring their glazes are food-safe.
Ceramic recipes "do not travel well" and are very sensitive to differences in materials, preparation (seiving and ball milling), application, firing, and cooling. Even for well-known and well-tested glazes, your results may be significantly different from others. Therefore, knowledge of how to test and adjust glazes is extremely important.
For more information, please see the Hazards information in Recipe Information section
This changelog is a log or record of all or all notable changes made to the Glazy website.
The changelog will be gradually completed as time permits.