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Derek Philip Au

Derek Philip Au

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Creating Analyses & Deriving Recipes on Glazy

by Derek
February 22, 2019
Categories Glazes Glazy

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New Calculator Feature:  Search by oxide Enter New Calculator Feature:  Search by oxide Enter an oxide like "b2o3" to search for materials containing that oxide. Percent analyses are now shown with each material in the calculator list. #calculator #theglazyproject #craft #glaze #glazes #glazerecipes #glazetest #ceramics #pottery #ceramicglazes #glazechemistry #glazechem #glazecalc #umf #glazy
New Video:  How to Use the Blending Guides This New Video:  How to Use the Blending Guides This short help video shows you how to use the Volumetric Blending Guides.  I've released the Blending Guides as free PDF downloads.  Both the video and downloads are on the Glazy Help website: http://help.glazy.org/testing/blending-guides/  (link in bio) #triaxial #volumetricblending #theglazyproject #craft #glaze #glazes #glazerecipes #glazetest #ceramics #pottery #ceramicglazes #glazechemistry #glazechem #glazecalc #umf #glazy
For an upcoming @redlodgeclaycenter group exhibiti For an upcoming @redlodgeclaycenter group exhibition, I wanted to try to make my "Painted" series of high-fire reduction celadon work in mid-fire oxidation.  This locally-reduced Silicon Carbide (SiC) Bristol Celadon glaze isn't perfect.  Some have slight areas of carbon trapping on the interiors, and I didn't have time to completely resolve the bubbles.  But I'm happy to have gotten some work out in time for the show. Again, special thanks to @pricklypotter, @potterbenstudio and @dreamsofceladon for the groundwork in SiC reduction. Recipe in bio: https://glazy.org/recipes/92879 #painted #celadon #craft #glaze #glazes #glazerecipes #glazetest #ceramics #pottery #ceramicglazes #glazechemistry #glazechem #glazecalc #umf #glazy
Today I'm releasing both the Triaxial Blending Gui Today I'm releasing both the Triaxial Blending Guide and Line & Biaxial Blending Guide.  You can buy these as beautiful, Museum-quality posters on Glazy's Etsy store, or you can download the PDF's for free.  You can print the PDF's yourself or save them on your mobile device for handy reference in the studio. Volumetric Blending is the easiest way to quickly create a large number of tests by mixing batches of only 2-4 "corner" recipes.  Many of the tests you can find in Glazy's Instagram feed are made with this method.  But it can be difficult to remember the proportions for each syringe test batch.  These blending guides make Line, Triaxial, and Biaxial Blends simple! http://help.glazy.org/testing/blending-guides/  (link in bio) #triaxial #volumetricblending #theglazyproject #craft #glaze #glazes #glazerecipes #glazetest #ceramics #pottery #ceramicglazes #glazechemistry #glazechem #glazecalc #umf #glazy
Glazy Series:  Volumetric Blending Basics Popul Glazy Series:  Volumetric Blending Basics Popularized by Ian Currie, Volumetric Blending is an easy way to create blends between two or more recipes.  We can blend anything- glaze recipes, clay bodies, even smoothies and bread dough. Starting with equal recipe batch weights (for example, 100 grams), mix/sieve each batch and then add water until all batches have the same volume.  Now blends between recipes can be made using volume. Please see link in bio for the article and video! #volumetricblending #triaxial #biaxial #theglazyproject #craft #glaze #glazes #glazerecipes #glazetest #ceramics #pottery #ceramicglazes #glazechemistry #glazechem #glazecalc #umf #glazy
These celadons are not "fake".   The colors in These celadons are not "fake".   The colors in these glazes are all produced by iron, from yellow to green to green-blue, from oxidation to reduction.  But they were all fired in the same kiln, using a simple oxidation cone 6 firing program with no special firing or cooling schedule.  The only variables were the addition of silicon carbide (SiC) and zinc oxide. This series of tests is especially indebted to the groundwork laid by @pricklypotter, @potterbenstudio and @dreamsofceladon. Visit link in bio for more information, discussion, as well as recipes. #celadon #craft #glaze #glazes #glazerecipes #glazetest #ceramics #pottery #ceramicglazes #glazechemistry #glazechem #glazecalc #umf #glazy
"Clear N Base" Celadon Line Blend A simple line b "Clear N Base" Celadon Line Blend A simple line blend with gradually increasing Silicon Carbide (SiC) and Red Iron Oxide (RIO). Still need to determine exact ratio of SiC to RIO for good reduction.  Lowering the amount of SiC will reduce bubbling. #craft #glaze #glazes #glazerecipes #glazetest #ceramics #pottery #ceramicglazes #glazechemistry #glazechem #glazecalc #umf #glazy
Why did "Clear N Base" work so well?  (Updated) Why did "Clear N Base" work so well?  (Updated) Following up on the last two posts about SiC reduced celadons in cone 6 oxidation:  Given the success of "Clear N Base" and @potterbenstudio's wonderful work, I tested the hypothesis in the "failed" test glazes, substituting 0.15 CaO with approximately 0.15 ZnO.  This test was successful and shows the role of Zinc in clearing carbon-trapping. #craft #glaze #glazes #glazerecipes #glazetest #ceramics #pottery #ceramicglazes #glazechemistry #glazechem #glazecalc #umf #glazy
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