Category: Glazes

  • Iron Saturate Glazes

    During the next few days I’ll be releasing a series showing how to create a glaze using Glazy and volumetric blending.

  • Glazy Search by Color

    Can’t figure out how to get a certain glaze color? Just click “Pick a Color” from the Glazy search to see the possibilities!

  • Cone 6 Oxidation Blue Triaxial Blend

    In Chinese Glazes, we learn from Nigel Woods that the cobalt used for underglaze blue & white underglazes and blue glazes came in a range of chemical compositions and grades of purity.  Thus, there are many shades of blue due to the quality of cobalt-containing stone as well the overlying glaze. In the same book, Nigel presents […]

  • Orton Cone 6 Clear Glazes

    Having not fired cone 6 since college, I started by first testing a number of clear cone 6 glazes on https://glazy.org I also studied up on cone 6 glaze chemistry via Matthew Katz​’s Advancing Glazes course and his papers: Boron in Glazes,  Mid-Temperature Glaze Science,  Glaze Safety/Durable Glazes Presentation. Click here for full image of […]

  • Clear Cone 6 Oxidation Glazes

  • Tichane’s Tests

    Some of Robert Tichane’s glaze tests and reproductions of Chinese Glazes donated to the Freer and Sackler Galleries: https://archive.asia.si.edu/collections/edan/default.cfm?searchTerm=tichane&btnG.x=0&btnG.y=0&btnG=Search

  • Orton Cone 11 R2O 0.18 Clear & Celadon Regions

  • Traditional celadon

    Recent firing with traditional porcelain stone glaze. In the past I’ve tried but failed to use modern materials like feldspar and kaolin to capture the beautiful, unctuous surface and depth of porcelain stone celadons. In this glaze the coloration is completely due to iron occurring naturally in the material.

  • Colors of Celadon: Iron and Titania

    Following images from Bonham’s 2014 auction, The Feng Wen Tang Collection of Early Chinese Ceramics The best resource I’ve found about color in Chinese glazes is Nigel Wood’s Chinese Glazes.  Chapter 8, Iron in Chinese Glazes, covers iron in detail, while celadons are covered throughout the book. There’s a great range of colour in Chinese celadons.  In traditional […]

  • Glazy: One Year Old

    One year old! Exactly one year ago, Glazy registration was opened to the public. Since then, we’ve made a ton of improvements and added many more recipes. Thank you! 94% of website server fees have been paid with your generous donations. Thanks to all of you who have added recipes, photos, and contributed valuable ideas […]

  • Glaze Stone + Glaze Ash (釉果 + 二灰)

  • Glaze Transparency Test

    Recently I’ve been wondering if there’s a reliable way to test glazes for transparency.  A method that would allow one to compare results from different firings and glaze types. Paint manufacturers have a system for testing paint opacity that uses a black and white card from which a contrast ratio can be calculated. The primary manufacturer is Leneta. […]

  • Jun

  • Spraying Glaze

    Spraying glaze is a fairly complicated process.  There are craftspeople in Jingdezhen whose only job is going from workshop to workshop spraying glaze.  There are so many factors involved with spraying (the type of work, thickness of work, type of glaze, glaze consistency, air pressure, spray head type, even weather) that it requires years of experience to […]

  • Mixing test glazes

    It’s important to wear a NIOSH certified mask whenever using dry glaze materials. I guess mixing up glazes isn’t that big of a deal, but I’m sharing my technique just in case there are some absolute beginners out there. I find it easier to use a digital scale, see my article here. Glazes “don’t travel well”, in […]

  • Seeing the cones

    I’ve seen a few techniques for seeing into the kiln at high temperature.  An old friend of mine still prefers blowing into the peephole, unfortunately on more than one occasion it has resulted in the particles resting in the peephole to be blown in as well, settling on the ware.  The Jingdezhen firing masters I’ve met […]

  • Qing Dynasty Test Tiles

  • Glazy open source ceramics recipe library

    I invite all of you to join Glazy, a ceramics recipe library that allows anyone to browse and add pottery recipes for free. Glazy was built using the latest open source tools, including Laravel and Bootstrap.  The database of ceramic recipes was originally seeded with data from Linda Arbuckle’s GlazeChem database and John Sankey’s glaze database. John Britt, Alisa Liskin Clausen, Terry Rorison and […]

  • Glazy: Glaze recipes most used materials

    With the data stored in Glazy it is possible to visualize recipes using graphs and charts. In the future, these visualizations and more will be added to Glazy at http://glazy.org/graphs Below are simple pie charts showing the most commonly used glaze materials for both Mid-Fire and High-Fire glazes. For those who are just starting out with glazes, these charts […]

  • Orton Cone 10 Reduction Glaze Line Blends

    Leach 4321 is a simple, reliable glaze that we can use to compare coloring oxides. All of the following glaze variations can be found on Glazy:  http://glazy.org/search?search_words=leach&category=36&cone=high