Insight-Live User Group

17 members

Description

This is a working group dedicated to testing and sharing glaze research results on our group area of the Insight-Live Glaze Recipe Database. This is absolutely the best place to share your recipes with photos and notes. You can add notes and pictures to other people's recipes showing how your results vary from the originals, and from other people's work with the same glaze. Members are required to periodically contribute notes, pictures, or well documented new recipes to the database.

Videos are available to orient new users with using the database and the user interface, and a text based help system is available

With the online glaze recipe database, members can upload recipes and pictures, search the databases for recipes, append recipes with new notes, and create printable batch mix sheets from recipes. Now members can copy an existing recipe and modify it while comparing the chemistry of both versions.   

This group is the cone6pots portal to Insight-Live. We accept anyone with cone6pots network membership, who agrees to publish photos and/or notes of their results with glaze recipes.. To gain  access to our group's Insight-Live database, you must first join the C6P network, and then this group. Your login information will be generated and sent to you, normally within a day or two.

Database access is a benefit brought to you by supporting members of the cone6pots network.

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Click the button below to login to Insight-Live. When logging in to the group recipe database, type in your user ID, not your email address (which you can use for a different individual account login). If you forget your user ID or password, contact George Lewter and he will send you a new temporary ID/password.

 

Comments Discussions Members

Finding the perfect clear

by Donna Kat

Mar 8, 2018

Has anyone worked with Tony Hansen's G1214W Clear? I had thought I had found the perfect clear for our studio when I found this glaze. It did not craze on Standard clays. It was crystal clear and it behaved well with all the underglazes used with it. Then it started turning milky. I weigh the glazes so it was not an issue of thickness or application. I worried about contamination but after several new batches for testing I convinced myself that no, it was the glaze. Some people suggested that this was really a ^7 glaze and that would explain the glaze becoming milky over time if in fact the kiln had been firing hot when I first started using the glaze after a change in elements and as I adjusted the firing for our ^6 firings the problem showed up. 

So the question and/or challenge after this long intro is has anyone else had experienced with this glaze? Since upping the boron is probably going to up the cloudiness does anyone have a suggestion for lowering the temperature without upping the F3134? Finding a clear glaze that fits a lot of clays is very difficult. Finding that plus one which is crystal clear and does not change the color of the underlying clay and underglazes is near impossible. this is the most promising glaze I have found.

Load Previous Replies
  • up

    Norm Stuart

    We too used the Mastering Cone 6 Glaze Glossy Clear Base #1 for years.  Their #2 base with more silica can run if over-applied.



    Gina Skillings said:

    When I want a clear that doesn't go milky I use John's and Ron's Glossy Clear Liner Glaze from Mastering Cone 6 Glazes. I've not had any issues with it and I use a slow cool program. 

    Mar 12, 2018

  • up

    Gina Skillings

    For clear I use the one they designated as a clear liner glaze on page 97. They mention that it is more transparent than base glaze 1. It uses G-200 Feldspar which I still have but I've made note of the changes for using G-200 HP. 

    Mar 12, 2018

  • up

    Donna Kat

    I have tried almost every glaze mentioned and only Bates clear and G1214 was crystal clear and behaved well with underglaze and iron. Bates crazed and G1214 did not. It is time to go back to testing but the studio has shut down so I now must go at my own pace which is much slower than 100+ people.

    Norm Stuart said:

    Donna - In general, glazes become yellow from Iron and blue from Boron.

    There's two ways for G1214W to cloud up, especially with slower cooling.

    It has a generous amount of Boron and Silica which can produce "Boron Clouding" which is a blueish white haze. You can limit this by increasing the percentage of Alumina.  This is most likely what you're seeing.

    While this recipe has far less Calcium than a Calcium semi-matte, calcium from the Wollastonite can cloud up a glaze with a slow-cool. A handful of wollastonite is essentially the ultimate calcium-matte.

    You may want to try "Norm Stuart's Clear Clear ^6". The Boron level is less, but so is the Alumina, so this may not fix your problem.

    But the percentage of Calcium is lower than G1214W. And there's far less iron by using New Zealand Kaolin. The 1% Veegum bentonite also adds fluorine as a flux which helps keep glazes clear in my experience (or at least in my imagination).

    Both glazes are much clearer than the Cone 06 low-fire "Idiot Proof Clear" which always has a bluish green cast to it from the sickly-high 20% boron level it contains to make it melt at Cone 06.  But the Alumina level is also much higher in "Idiot Proof Clear" so there's never any boron clouding, just a bluish color.

    Sep 2, 2018