tag:blogger.com,1999:blog-51629465583865863562024-03-04T21:27:44.260-08:00Flowerpress Glaze TestingA place to record my adventures in glaze testing and ceramicsflowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.comBlogger15125tag:blogger.com,1999:blog-5162946558386586356.post-65777104040398480062020-10-15T16:13:00.001-07:002020-10-18T20:19:53.711-07:00Cone 6 spoons and Val's Turquoise two ways
<a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/50475052956/in/dateposted-public/" title="spoonsbowls"><img alt="spoonsbowls" height="750" src="https://live.staticflickr.com/65535/50475052956_e4fb20da6b_z.jpg" width="600" /></a><script async="" charset="utf-8" src="//embedr.flickr.com/assets/client-code.js"></script> <div><br /></div><div>Val's Turquoise two ways - bowls and spoons, clockwise from top left selsor chun, ashley's best, cesco clear.</div><div><p>I haven't done anything for a while, so to get going again with glazes I dipped some of the spoons I've been making recently into existing glazes and mixed two versions of a new one - Val's Turquoise.</p><p></p><p>This time I bisque fired the spoons only to cone 04 - 1046ish as I read somewhere that they take the glaze better. Older bisque went to cone 05 or higher 1080C.</p><p>Remixed all old Cone 6 glazes lots and checked Specific Gravity.</p><p>Recorded the Spec Grav in Glaze book.</p><p>Arrowmont Blue Green ran badly and crazed a lot when it came out of the kiln. Pinged a lot. Good in bowl but crazed.</p><p>Fix this somehow? My version very glossy compared to online.</p><p>VC Matte yellow ran too. Good in bowl. Didn't craze.</p><p>Maybe they both need to be deflocculated?</p><p>Ashleys best was good. Very thick for spoons though prefer translucent.</p><p>I wrote out the recipe each time without Eckalite but I'm sure it must have gone in because the glaze worked?</p><p>Selsor Chun was great. Use again. See that some people add copper carb to bring up the blue. Test?</p><p>Val's Turquoise was well behaved. The lighter colour is better but could still be lighter. Its a bit flat.</p>
<a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/50485584291/in/dateposted-public/" title="conechartcelsiusSS"><img alt="conechartcelsiusSS" height="654" src="https://live.staticflickr.com/65535/50485584291_bda3a47f45_c.jpg" width="600" /></a><div><br /></div><div><script async="" charset="utf-8" src="//embedr.flickr.com/assets/client-code.js"></script>
<a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/50475052956/in/dateposted-public/" title="spoonsbowls"><img alt="spoonsbowls" height="750" src="https://live.staticflickr.com/65535/50475052956_e4fb20da6b_z.jpg" width="600" /></a><script async="" charset="utf-8" src="//embedr.flickr.com/assets/client-code.js"></script>
Val's Turquoise bowls and spoons both %, clockwise from top left selsor chun, ashley's best, cesco clear.
<div><br /></div>
<a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/50475052686/in/dateposted-public/" title="spoonscu"><img alt="spoonscu" height="600" src="https://live.staticflickr.com/65535/50475052686_776aa50a42_z.jpg" width="600" /></a><script async="" charset="utf-8" src="//embedr.flickr.com/assets/client-code.js"></script>
<div><br /></div><div>selsor chun, clear cesco midfire paint on, val's turquoise 3% on spoon 1.5% on owl, bowl in VC Matte Yellow.</div>
<a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/50475201442/in/dateposted-public/" title="spoons most"><img alt="spoons most" height="600" src="https://live.staticflickr.com/65535/50475201442_7d77c6b445_z.jpg" width="600" /></a><script async="" charset="utf-8" src="//embedr.flickr.com/assets/client-code.js"></script></div></div>flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-37612807150074764842019-08-04T19:34:00.007-07:002020-10-19T22:39:55.258-07:00Cone 6 GlazesTesting some cone 6 glazes from John Britt's Mid-Range Glazes and online resources<br />
<br />
<div style="text-align: center;">
<u>GREENS and BLUES</u></div>
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<br />
<b>Alicia Clausen's Turquoise Matte 'The One'</b><br />
Nepheline Syenite 60<br />
Strontium Carbonate 25<br />
Silica 9<br />
EPK 4<br />
Lithium Carbonate 2<br />
<div>Copper Carbonate 3.5<br />
Bentonite 4<br />
Epsom Salts 1<br />
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<br />
<b>Chun Seafoam</b><br />
Soda Feldspar 41<br />
Silica 27<br />
Whiting 15<br />
Eckalite 5<br />
Zinc Oxide 12<br /><br /></div><div>
Copper Carbonate 5<br />
Titanium Dioxide 5<br />
Bentonite 2<br />
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<br />
<b>Pinnell Seafoam</b><br />
Soda Feldspar 51.3<br />
Strontium carbonate 25.5 <div>EPK 13.6<br />
Frit 3134 9.6<br /><br /></div><div>
Copper Carbonate 5<br />
Titanium Dioxide 5<br />
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<br />
<b>Pinnell's Strontium Matte </b><br />
Nepheline Syenite 57<br />
Silica 8.6 </div><div>Ball Clay 9.5<br />
Strontium Carbonate 19<br />
Lithium Carbonate 5.9<br /><br /></div><div>
Copper Carbonate 5<br />
Titanium Dioxide 5<br />
Bentonite 2<br />
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<br />
<b>Arrowmont Blue Green </b><br />
Nepheline Syenite 44.6<br />
Silica 13.3 Whiting 11.1<br />
Eckalite 13.3<br />
Gerstley Borate 11.1<br />
Lithium Carbonate 6.6<br />
Titanium Dioxide 6.2<br /><br /></div><div>
Cobalt Carbonate 1<br />
Bentonite 2<br />
<br />
<div style="text-align: center;">
<u>LIGHT BLUE</u></div>
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<b><br /></b><b>Selsor Chun</b><br />
Soda Feldspar 34<br />
Silica 30<br />
Whiting 10<br />
Dolomite 6<br />
Frit 3134 17<br />
Zinc Oxide 3<br />
Tin Oxide 1<br /><br /></div><div>
Red Iron Oxide 0.5-2<br />
Bentonite 2<br />
<div style="text-align: center;">
<u>PURPLE</u></div>
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<b>Ashley’s Best (purple)</b><br />
Nepheline Syenite 27.2<br />
Silica 25.3<br />
Dolomite 16.2</div><div>Eckalite 13.3</div><div>
Talc 11.4<br />
Lithium Carbonate 6.6<br /><br /></div><div>
Cobalt carbonate 2-4<br />
Bentonite 2</div><div><br />
<div style="text-align: center;">
<u>CRAWL</u></div>
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<b>Lalone Crawl</b><br />
Neph Syenite 70 </div><div>Ball Clay 5<br />
Magnesium Carbonate 25<br />
<div style="text-align: center;">
<u>YELLOW</u></div>
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<span style="color: black; margin-left: 1em; margin-right: 1em; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjq4AhTQPGCj8fpuLTs9EYCL4oYbaEHVlOXO1bul7hKV3b7xez7n_TCtEOrE0RUtIks7_XaDDYDczOpgB1nU10xVrsw9WOPuE9PcdC-7bs5q5he2GliOXRN4HQxR3niGti_wP_PObaN9Jk/s1600/VCMatte.jpg" style="margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjq4AhTQPGCj8fpuLTs9EYCL4oYbaEHVlOXO1bul7hKV3b7xez7n_TCtEOrE0RUtIks7_XaDDYDczOpgB1nU10xVrsw9WOPuE9PcdC-7bs5q5he2GliOXRN4HQxR3niGti_wP_PObaN9Jk/s400/VCMatte.jpg" width="400" /></a></span></div>
<b>V.C. Matte (Yellow) </b><br />
Nepheline Syenite 44.4<br />
Silica 15.6 </div><div> Whiting 8.9<br />
Eckalite 11.1<br />
Gerstley Borate 11.1<br />
Lithium Carbonate 8.9<br /><br /></div><div>
Rutile 4<br />
Titanium Dioxide 6-10<br />
Bentonite 2<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
</div></div>flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-33732981902025999292019-03-25T19:32:00.000-07:002020-10-07T23:57:35.903-07:00HP Stoneware results<a href="https://www.flickr.com/photos/flowerpress/46545712745/in/dateposted-public/" title="IMG_6906 (1)"><img alt="IMG_6906 (1)" height="500" src="https://farm8.staticflickr.com/7885/46545712745_dbb0afa873.jpg" width="500" /></a><br />
<br />
<a href="https://www.flickr.com/photos/flowerpress/40619432534/in/dateposted-public/" title="glaze test colours"><img alt="glaze test colours" height="507" src="https://farm1.staticflickr.com/888/40619432534_d46ee9b183.jpg" width="497" /></a>
<br />
<a href="https://www.flickr.com/photos/flowerpress/26641596097/in/dateposted-public/" title="Glaze tests"><img alt="Glaze tests" height="500" src="https://farm1.staticflickr.com/940/26641596097_4324bbc9c1.jpg" width="500" /></a><br />
<br />
<br />
<b>14 Pine Street</b><br />
Colour variations<br />
<br />
Mixed up 200gms Base Glaze and divided it into four batches.<br />
Added these colourants<br />
1 - 0.375% Cobalt Carbonate, 6% rutile<br />
2 - 0.25% Cobalt Carbonate, 3.5% Titanium dioxide, 2.25% Copper Carbonate<br />
3 - 0.25% Cobalt Carbonate, 2.25% Copper Carbonate<br />
4 - 0.25% Cobalt Carbonate, 3% Red Iron Oxide<br />
<br />
<a href="https://www.flickr.com/photos/flowerpress/46737765344/in/dateposted-public/" title="glaze14colours"><img alt="glaze14colours" height="500" src="https://farm8.staticflickr.com/7838/46737765344_046a1d6ea2.jpg" width="500" /></a>
flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-84451781753168564372018-04-08T23:05:00.001-07:002018-04-08T23:13:09.317-07:00Cone 6 colour testsDate: 9 April 2018<br />
Clay: Keanes Stoneware 7<br />
<br />
Following on from last week's Cone 6 tests. Adding different colour oxides in 50-50 mixture for HP and four different colour tests for 14Pine.<br />
<br />
<b>HP </b><br />
Colour tests 50:50 grid<br />
<br />
Mixed up 250gms of Base Glaze and then divided it volumetrically into 5 equal batches.<br />
Started the five test pots with double strength as they will be diluted by 50% when combined with another pot.<br />
<br />
Added colourants as below:<br />
A - 3% Copper Carbonate<br />
B - 2% Cobalt Carbonate<br />
C - 6% Red Iron Oxide<br />
D - 12% Rutile flour<br />
E - 8% Titanium Dioxide<br />
<br />
<a href="https://www.flickr.com/photos/flowerpress/40619432534/in/photostream" title="glaze test colours"><img alt="glaze test colours" height="500" src="https://farm1.staticflickr.com/888/40619432534_d46ee9b183.jpg" width="497" /></a>
<br />
<b><br /></b>
<b>14 Pine Street</b><br />
Colour variations<br />
<br />
Mixed up 200gms Base Glaze and divided it into four batches.<br />
Added these colourants<br />
1 - 0.375% Cobalt Carbonate, 6% rutile<br />
2 - 0.25% Cobalt Carbonate, 3.5% Titanium dioxide, 2.25% Copper Carbonate<br />
3 - 0.25% Cobalt Carbonate, 2.25% Copper Carbonate<br />
4 - 0.25% Cobalt Carbonate, 3% Red Iron Oxide<br />
<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.flickr.com/photos/flowerpress/41335158571/in/photostream" style="margin-left: 1em; margin-right: 1em;" title="14P colour mixes"><img alt="14P colour mixes" height="500" src="https://farm1.staticflickr.com/793/41335158571_630a873626.jpg" width="500" /></a></div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.flickr.com/photos/flowerpress/41335222091/in/photostream" style="margin-left: 1em; margin-right: 1em;" title="Kiln colour"><img alt="Kiln colour" height="412" src="https://farm1.staticflickr.com/865/41335222091_abdfcb239e.jpg" width="500" /></a></div>
flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-50357122876529207142018-04-08T20:25:00.000-07:002018-04-08T20:26:56.739-07:00Cone 6 testsThree tests in recently fixed kiln.<br />
<br />
Date: 7th March 2018<br />
Clay: Keane's Stoneware 7<br />
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<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.flickr.com/photos/flowerpress/41289401902/in/photostream" style="margin-left: 1em; margin-right: 1em;" title="Hp glaze"><img alt="Hp glaze" height="500" src="https://farm1.staticflickr.com/895/41289401902_956cf41f0e.jpg" width="500" /></a>
<b><br /></b>
<a href="https://www.flickr.com/photos/flowerpress/39522508240/in/photostream" title="HP shade"><img alt="HP shade" height="500" src="https://farm1.staticflickr.com/865/39522508240_f76f5eaa78.jpg" width="500" /></a>
<b><br /></b></div>
<b><br /></b>
<b><br /></b>
<b>Hopeful Potter Matte</b><br />
<br />
40 Potash Feldspar<br />
20 Whiting<br />
25 Eckalite (China Clay)<br />
15 Silica<br />
<br />
<b>John Post Calcium Matte [JP. JPSM]</b><br />
<br />
30.2 Ball Clay FX (Kentucky OM)<br />
5.7 Frit 3134<br />
32.5 Nepheline Syenite<br />
16.3 Wollastonite<br />
4.9 Whiting<br />
10.4 Silica (Flint)<br />
<br />
<b>14 Pine</b><br />
4.03 Frit 3124<br />
28.20 Potash Feldspar<br />
16.11 Whiting<br />
19.17 Eckalite<br />
32.50 Silica<br />
<br />
<br />
Love them all.<br />
Surprised JP wasn't more matte.<br />
HP is lovely, read later its for ^8? Seems okay though, I"m going to perservere.<br />
14 is taken from my <a href="https://flowerpressglaze.blogspot.com.au/2016/09/currie-grid.html" target="_blank">Currie grid test</a> at Pine Street. Initially I'd chosen another square but later it crazed so I went with another mix that hadn't.<br />
<br />
Now to test with colour!<br />
<br />
<br />
<br />flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-17320544436085990332018-02-19T22:44:00.004-08:002019-10-12T21:20:13.153-07:00Earthenware tests 18/2Out of the kiln this morning a number of Earthenware cone 04 glaze tests.<br />
I'm still just trying to find successful base glazes, retesting some of the recipes I've tried before to make a base line for revisions.<br />
<br />
All were fired to 1080 degrees Celcius on Keanes Earthenware tiles bisque fired to cone 04.<br />
<br />
<b>Worthington Clear </b> <br />
EW cone 04<br />
<br />
Gerstley borate 55%<br />
Eckalite 30<br />
Silica 15<br />
<br />
<u>Results</u><br />
Very clear glaze, some bubbles in suspension in thickest parts.<br />
<br />
<a href="https://www.flickr.com/photos/flowerpress/26501963858/in/dateposted-public/" title="Glaze tests 18/2"><img alt="Glaze tests 18/2" height="550" src="https://farm5.staticflickr.com/4696/26501963858_5b4c2ac358_z.jpg" width="550" /></a>
<br />
<br />
<br />
<b>ABEM</b> <br />
cone 04<br />
<br />
Frit 3124 50<br />
Eckalite 15.65<br />
Whiting 16.65<br />
Silica 17.75<br />
Total 5<br />
<br />
<u>Results</u><br />
Nice smooth matte glaze<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
</div>
<a href="https://www.flickr.com/photos/flowerpress/40327712822/in/dateposted-public/" title="Glaze tests 18/2"><img alt="Glaze tests 18/2" height="550" src="https://farm5.staticflickr.com/4707/40327712822_4d125b92b5_z.jpg" width="550" /></a>
<br />
<b><br /></b>
<b><br /></b>
<b>EB</b>* <br />
clear EW, cone 04<br />
<br />
Frit 4131 83.3<br />
Eckalite 16.6<br />
* batches 2 and 3 combined and whizzed up to be smoother<br />
<br />
Results<br />
This seems quite matte even though its a clear recipe. Much better results from first try when I must have put incorrect amounts in. Whizzed up. Need to buy a sieve.<br />
<br />
<a href="https://www.flickr.com/photos/flowerpress/25502492527/in/dateposted-public/" title="Glaze tests 18/2"><img alt="Glaze tests 18/2" height="550" src="https://farm5.staticflickr.com/4714/25502492527_0ca25d775d_z.jpg" width="550" /></a><br />
<br />
<br />
<b>Julie's Satin</b><br />
cone 04<br />
<br />
Whiting 17<br />
Gerstley borate 27<br />
Lithium carbonate 6<br />
Nepheline syenite 4<br />
Eckalite 12<br />
Silica 34<br />
<br />
<u>Results</u><br />
This glaze is still cracking. Which is a pity because I like the quality of its matte surface.<br />
Will maybe try to modify it though I have tried before with no improvement.<br />
<br />
<a href="https://www.flickr.com/photos/flowerpress/25500700767/in/photostream" title="Glaze tests 18/2/18"><img alt="Glaze tests 18/2/18" height="550" src="https://farm5.staticflickr.com/4619/25500700767_0d02771d0b_z.jpg" width="550" /></a>
<br />
<br />
<br />
<br />
<b>Satin Base SB</b><br />
<br />
<u>Results</u><br />
This is the old batch remixed. The white version of this has a tendency to late crazing which is a pity because I really like the creamy surface of this.<br />
<br />
<a href="https://www.flickr.com/photos/flowerpress/39476017065/in/photostream" title="Glaze tests 18/2/18"><img alt="Glaze tests 18/2/18" height="550" src="https://farm5.staticflickr.com/4716/39476017065_3445e43ba3_z.jpg" width="550" /></a>
<br />
<br />flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-19378763983136238982018-02-19T18:17:00.000-08:002019-10-12T20:31:55.468-07:00Earthenware tests 10/2/18AB Clear glaze
Frit
Eckalite
LB revised to use Strontium carbonate
LB revised to use Whiting<br />
<br />
<br />
<a href="https://www.flickr.com/photos/flowerpress/39455572915/in/dateposted-public/" title="Glaze"><img alt="Glaze" height="640" src="https://farm5.staticflickr.com/4746/39455572915_9e31194a3d_z.jpg" width="640" /></a>
<a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/40352735431/in/dateposted-public/" title="Glaze"><img alt="Glaze" height="640" src="https://live.staticflickr.com/4722/40352735431_a2a17b689b_z.jpg" width="640" /></a><script async="" charset="utf-8" src="//embedr.flickr.com/assets/client-code.js"></script>
<a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/38543068210/in/dateposted-public/" title="Glaze"><img alt="Glaze" height="640" src="https://live.staticflickr.com/4668/38543068210_bcf2227187_z.jpg" width="640" /></a><script async="" charset="utf-8" src="//embedr.flickr.com/assets/client-code.js"></script>
flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-11772436377982776722018-02-14T18:28:00.000-08:002018-02-14T18:29:44.075-08:00Five Earthenware Base RecipesOriginally written 26 Sept 2016
<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.flickr.com/photos/flowerpress/29126527414/in/dateposted-public/" title="glaze testing"><img alt="glaze testing" height="550" src="https://c7.staticflickr.com/9/8205/29126527414_fcfbf8b40c_z.jpg" width="550" /></a></div>
<br />
Testing of five different Cone 04 matte or satin base recipes. All of the recipes have very similar ingredients, but different ratios.<br />
<br />
These tests weren't ultimately successful as a week later four of them had crazed.<br />
<br />
Retesting Julie's Satin (JMBC) and also testing a variation (JMBC revA), revised using hints from <a href="http://www.glazesimulator.com/" target="_blank">Glaze Simulator</a>. <br />
<br />
<b> A. Jackie's Matte via Priscilla Hollingsworth</b><br />
<br />
38 Gerstley borate<br />
10 Lithium carbonate<br />
5 Nepheline syenite<br />
5 Eckalite 2<br />
42 Silica<br />
<br />
5% Zircosil<br />
<br />
<a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/29753608515/in/dateposted-public/" title="Glaze testing"><img alt="Glaze testing" height="550" src="https://c4.staticflickr.com/8/7577/29753608515_069bf89699_z.jpg" width="550" /></a>
<br />
<b><br /></b>
<b>B. Satin Base (from <a href="http://ceramicartsdaily.org/ceramic-glaze-recipes/low-fire-glaze-recipes/creating-subtle-layers-with-sgraffito-slip-and-multi-toned-glazes/" target="_blank">here</a>)</b><br />
<br />
65.5 Ferro frit (4124) 3124<br />
11 Nepheline syenite<br />
5 Eckalite<br />
42 Silica<br />
<br />
<b>C. Julie's Satin (from here)</b><br />
<br />
27 Gerstley borate<br />
7 Lithium carbonate<br />
17 Whiting<br />
4 Nepheline syenite<br />
11 Eckalite 2<br />
34 Silica<br />
<br />
<b> D. Hirsh's Satin Matte</b><br />
<br />
32 Gerstley borate<br />
9 Lithium carbonate<br />
17 Whiting<br />
4 Nepheline Syenite<br />
4 Eckalite 2<br />
35 Silica<br />
<br />
2% Bentonite<br />
<br />
<b> E. Julie's Matte revised to fix crazing (JM rev A)</b><br />
<br />
27 Gerstley borate<br />
6 Lithium carbonate<br />
17 Whiting<br />
4 Nepheline syenite<br />
12 Eckalite 2<br />
34 Silica<br />
<br />flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-22714018214546420102016-09-26T20:45:00.002-07:002016-09-26T20:45:41.202-07:00Currie Grid <div class="separator" style="clear: both; text-align: center;">
<a href="https://www.flickr.com/photos/flowerpress/29644036102/in/dateposted-public/" title="Glaze testing"><img alt="Glaze testing" height="550" src="https://c7.staticflickr.com/9/8222/29644036102_265795646c_z.jpg" width="550" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMJgoS6iR1-3Y_-R_kMM1q26WYcGifNg53Ob0pTsDEf35tTm8Nyc823G57hOu5ysy3_1KJr_p9NYgDk6gaAKvEX6UMfZkkZ_8-BebCmtVdcT1xz9wvFBkkFbokkCEvE4aJqGKwZk2wLRE/s1600/curriegridfinal.JPG" imageanchor="1"><img border="0" height="550" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMJgoS6iR1-3Y_-R_kMM1q26WYcGifNg53Ob0pTsDEf35tTm8Nyc823G57hOu5ysy3_1KJr_p9NYgDk6gaAKvEX6UMfZkkZ_8-BebCmtVdcT1xz9wvFBkkFbokkCEvE4aJqGKwZk2wLRE/s640/curriegridfinal.JPG" width="550" /></a></div>
<br />
<br />
Learning to do a stoneware test grid using Ian Currie's method for testing fluxes, alumina and silica ratios.<br />
<br />
This is a Cone 6 Base Glaze.
<br />
Calculation page <a href="http://ian.currie.to/original/calculation_page.htm">here</a>.<br />
<br />
Work out the flux ratios you want to use and then add them at the top. Click calculate and you have your formula. The Horizontal scale moves from C in the bottom left corner right towards high silica and upwards on the vertical plane towards high alumina.<br />
<br />
Fluxes used are Frit 4124, Potash feldspar and Whiting.flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-44845082078041397622016-09-26T20:39:00.000-07:002019-10-12T20:33:04.461-07:00Lucy Burley's Matte<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.flickr.com/photos/flowerpress/29643955272/in/dateposted-public/" title="Glaze testing"><img alt="Glaze testing" height="550" src="https://c1.staticflickr.com/9/8048/29643955272_54a3fff023_z.jpg" width="550" /></a></div>
<br />
<br />
I found this recipe on Ceramic Arts Daily's <a href="http://ceramicartsdaily.org/ceramic-glaze-recipes/glaze-chemistry-ceramic-glaze-recipes-2/cool-colors-ceramic-glaze-recipes-for-greens-blues-and-turquoises/">article about Green, Blue and Turquoise glazes</a>. I love these colours and I'm looking for matte glazes for cone 04 firings.<br />
<br />
I have substituted Strontium carbonate for Barium carbonate.<br />
<br />
I did a rough line blend, rough because I started the test using a teaspoon to measure units in the blend and ran out of glaze mix.<br />
<br />
<b>Lucy Burley's Matte Glaze Recipe</b><br />
<br />
10 Strontium carbonate<br />
45 Frit 3134<br />
15 Potash Feldspar<br />
15 Ball Clay FX<br />
15 Eckalite 2<br />
<br />
<b>Results</b><br />
<br />
I love the colours in these tests. You can't see in the photo but this glaze bubbled at the edges.<br />
<br />
I think this is because I didn't add enough water to the glaze mix and it went on very thick.<br />
<br />
It isn't very matte either, a little shiny for a matte glaze. I might try to tweak it if I make it again to tone down the shininess and fix the bubbling.<br />
<br />
<br />flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-44621606956996384982016-09-17T22:53:00.004-07:002020-11-18T22:13:30.415-08:00Julie's Satin Triaxial - Blog Ceramique
<div class="separator"><br /></div><div class="separator"><a href="https://www.flickr.com/photos/flowerpress/29128722414/in/dateposted-public/" style="margin-left: 1em; margin-right: 1em;" title="Glaze testing"><img alt="Glaze testing" height="550" src="https://c7.staticflickr.com/9/8030/29128722414_05253b3d0f_z.jpg" width="550" /></a></div><div class="separator"><br /></div>
<div class="separator"><a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/50619218147/in/dateposted-public/" style="margin-left: 1em; margin-right: 1em;" title="Julie"><img alt="Julie" height="733" src="https://live.staticflickr.com/65535/50619218147_b77de9b3dc_z.jpg" width="550" /></a></div>
<script async="" charset="utf-8" src="//embedr.flickr.com/assets/client-code.js"></script>
<div class="separator"><br /></div><div><br /></div><div class="separator" style="clear: both; text-align: center;"><a data-flickr-embed="true" href="https://www.flickr.com/photos/flowerpress/50619111086/in/dateposted-public/" style="margin-left: 1em; margin-right: 1em;" title="Julie"><img alt="Julie" height="640" src="https://live.staticflickr.com/65535/50619111086_12e6eabe46_z.jpg" width="480" /></a></div><div></div><div><br /></div><div><br /></div><div><br /></div>
This glaze test is for another <a href="https://blogceramique.com/2013/10/30/recherche-de-coloration-bleu-vert-par-julie/" target="_blank">Blog Céramique</a> triaxial - Julie's Satin Base in green/blue<br /><br /><div>
It's based on a cone 04 satin/matte base glaze recipe, which I think is based on the </div><div>popular Jackie's Base glaze found around the net - the ingredients are similar - but this has added Calcium Carbonate (as an opacifier?) and different ratios. I used it on Keane's Earthenware 37 fired in my home kiln, an old Ward.<br />
<br />
I mixed this one at home and fired it with a mixed firing of bisque and glazed pieces. One of the benefits of firing to cone 04 is being able to mix loads.<br />
<br />
I had problems with reaching temperature as I had the controller programmed wrong and the kiln turned off too early before the cone had bent. Took another hour of fiddling with the controller to get it melted.<br />
<br />
I don't think I did slow cool on this firing but it sort of had a soak due to the mistake.<br />
<br />
The only substitution is Eckalite 2 for EPK which is unavailable here.<br />
<br />
While I had the base mixed I did some extra experiments with cobalt, light blue stain and rutile.<br />
<br />
<b>Julie's Satin Base</b><br />
<br />
17 Calcium carbonate<br />
27 Gerstley borate<br />
7 Lithium carbonate<br />
4 Nepheline syenite<br />
11 Eckalite 2 (my substitute for EPK)<br />
34 Silica<br />
<br />
In the Triaxial<br />
A was the base glaze, <br />
B was 3.5% Copper carbonate<br />
C was 1% Chrome Oxide<br />
<br />
<b>Results</b><br />
<br />
I think I might have made the colour too strong too, I can't remember if I divided the amounts into thirds or just put the whole amount in each corner.<br />
<br />
As it is the chrome seems unmelted and has taken on a rough burnt looking texture where it is most concentrated. The colours certainly look different to the sample tests on the BC blog.<br />
<br />
Also the glaze has crazed in its base form and on some of the copper side.<br />
<br />
I love the finish of this one though and will try to reformulate it to fix the crazing. Has a lovely thick buttery matte texture.</div><div><br /></div><div><a href="https://www.flickr.com/photos/flowerpress/29128730114/in/dateposted-public/" style="margin-left: 1em; margin-right: 1em;" title="Glaze testing"><img alt="Glaze testing" height="550" src="https://c3.staticflickr.com/9/8830/29128730114_ae5bd82b02_z.jpg" width="550" /></a></div>flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-75154836115545146312016-09-17T21:37:00.004-07:002016-09-18T01:34:09.728-07:00Naragon White cone 6 results<div class="separator" style="clear: both; text-align: center;">
<span style="font-family: Georgia, Times New Roman, serif;"><a href="https://www.flickr.com/photos/flowerpress/29272011331/in/album-72157672854827642/" title="Glaze test"><img alt="Glaze test" height="550" src="https://c4.staticflickr.com/9/8369/29272011331_d4c5e61512.jpg" width="550" /></a><a href="https://www.flickr.com/photos/flowerpress/29252354051/in/album-72157672854827642/" title="Glaze tiles"><img alt="Glaze tiles" height="550" src="https://c4.staticflickr.com/9/8516/29252354051_25e9197701_z.jpg" width="550" /></a><a href="https://www.flickr.com/photos/flowerpress/29463971590/in/album-72157672854827642/" title="Glaze testing"><img alt="Glaze testing" height="550" src="https://c7.staticflickr.com/9/8429/29463971590_ecdca2116e_z.jpg" width="550" /></a></span></div>
<span style="font-family: Georgia, Times New Roman, serif;"><br /></span>
<span style="font-family: Georgia, Times New Roman, serif;"><br /></span>
<b><span style="font-family: Georgia, Times New Roman, serif;"><u>Naragon White version 1</u></span></b><br />
<span style="font-family: Georgia, Times New Roman, serif;"><span style="font-family: "arial" , "helvetica" , sans-serif;"><br /></span>
<span style="font-family: "georgia" , "times new roman" , serif;">31% Soda Feldspar</span></span><br />
<span style="font-family: Georgia, Times New Roman, serif;"><span style="font-family: "arial" , "helvetica" , sans-serif;"><br /></span>
<span style="font-family: "arial" , "helvetica" , sans-serif;">2 Bentonite</span></span><br />
<span style="font-family: Georgia, Times New Roman, serif;"><span style="font-family: "georgia" , "times new roman" , serif;"><br /></span>
<span style="font-family: "georgia" , "times new roman" , serif;">Mixed dry and then water added. Divided into three pots of 66.6ml each.</span></span><br />
<span style="font-family: Georgia, Times New Roman, serif;"><span style="font-family: "georgia" , "times new roman" , serif;"><br /></span>
<span style="font-family: "georgia" , "times new roman" , serif;">The triaxial with three corners as follows starting from the apex:</span></span><br />
<span style="font-family: Georgia, Times New Roman, serif;"><span style="font-family: "georgia" , "times new roman" , serif;"><br /></span>
<span style="font-family: "georgia" , "times new roman" , serif;">A 10% Tin Oxide (100 x 10 x 33.3/100) added 3.33g</span></span><br />
<span style="font-family: Georgia, Times New Roman, serif;">B 7% Copper Carbonate (100 x 7 x 33.3/100) added 2.33g</span><br />
<span style="font-family: Georgia, Times New Roman, serif;">C 2% Cobalt Carbonate, 10% (100 x 10 x 33.3/100) added 0.66g</span><br />
<span style="font-family: Georgia, Times New Roman, serif;"> 10% Rutile flour (100 x 10 x 33.3/100) added 3.33g</span><br />
<span style="font-family: Georgia, Times New Roman, serif;"><br /></span>
<span style="font-family: Georgia, Times New Roman, serif;">Fired to cone 6 in my Ward kiln. Slow cooled.</span><br />
<span style="font-family: Georgia, Times New Roman, serif;"><br /></span>
<span style="font-family: Georgia, Times New Roman, serif;"><b>Results</b></span><br />
<span style="font-family: Georgia, Times New Roman, serif;">Colour needs mixing with a blender, appears a bit grainy. Base glaze is pinkish from tin oxide. Poured rather than dipped. Need to repeat this test but concentrating on the lighter oxides, tiles 1, 2 and 3.</span><br />
<span style="font-family: Georgia, Times New Roman, serif;">I like the way the rutile has added texture especially to the Cobalt corner.</span>flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-60518264775988157522016-09-17T21:30:00.000-07:002016-09-18T01:30:54.540-07:00My first glaze test<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.flickr.com/photos/flowerpress/28710367263/in/album-72157672854827642/" title="Glaze tiles"><img alt="Glaze tiles" height="550" src="https://c8.staticflickr.com/9/8540/28710367263_2282b2b4a1.jpg" width="550" /></a><a href="https://www.flickr.com/photos/flowerpress/29297536386/in/album-72157672854827642/" title="Glaze making"><img alt="Glaze making" height="550" src="https://c3.staticflickr.com/9/8129/29297536386_9e25206856_z.jpg" width="550" /></a></div>
<br />
My first attempt at mixing a glaze recipe from raw materials. I really love the images on the Blog Ceramique site and optimistically chose one of their Triaxial blends for my first glaze test.
The base glaze recipe from Blog Ceramique is:
<br />
<br />
31 Kona F4<br />
26 Gerstley Borate<br />
6 Calcium carbonate<br />
4 Dolomite<br />
25 Silica<br />
8 EPK<br />
<br />
2 Bentonite<br />
<br />
My translation substituted with Australian ingredients was this:<br />
<br />
31 Soda Feldspar<br />
26 Frit 3134<br />
6 Calcium carbonate<br />
4 Dolomite<br />
25 Silica<br />
8 Eckalite<br />
<br />
2 Bentonite<br />
<br />
Mixed dry and then water added. Divided into three pots of 66.6ml each.<br />
<br />
The triaxial with three corners as follows starting from the apex:<br />
<br />
A 10% Tin Oxide (100 x 10 x 33.3/100) added 3.33g<br />
B 7% Copper Carbonate (100 x 7 x 33.3/100) added 2.33g<br />
C 2% Cobalt Carbonate, 10% (100 x 10 x 33.3/100) added 0.66g<br />
10% Rutile flour (100 x 10 x 33.3/100) added 3.33gflowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-37107073732446635602016-09-17T20:34:00.005-07:002016-09-17T20:52:58.025-07:00pine street glaze course<div class="separator" style="clear: both; text-align: center;">
<a href="https://www.flickr.com/photos/flowerpress/28708239434/in/album-72157672854827642/" title="Test tiles"><img alt="Test tiles" height="500" src="https://c3.staticflickr.com/9/8026/28708239434_8403f39876.jpg" width="500" /></a></div>
<br />
I'd been interested in glaze making for a while when I enrolled in Pine Street's glaze making course in August 2016. The teacher was Greg Crowe.<br />
<br />
In the first week we chose a glaze test to suit the type of firing we were doing.
I've been wanting to experiment with stoneware clay fired to cone 6 after seeing so many great glazes and recipes online. Until now I've been focussed on earthenware, which I still like for its great colours, so I think I'll work to find recipes for cone 04 too.<br />
<br />
I wasn't sure my kiln could fire to cone 6 temps but a test firing this week shows it easily makes that mark. Early on in this ceramics journey I bought a wheel and a kiln because I want to make and fire everything inhouse, it means I can work at my own pace and control each part of the process. My little old Ward kiln with its new controller is working well and I am slowly refining my firing schedules to get the perfect rise and fall. To mix up my own glazes is a logical progression.<br />
<br />
My reading list is up in a link list there on the left. I'll keep adding to it as I go and would love suggestions. If you know of any good glaze references or have your own glaze/ceramics blog leave the link in a comment below.<br />
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Week one at glaze school we made test tiles for future firings in a number of ways, both flat and pinched and napkin ring style and left them in the kiln room for firing to use for our first test next week.flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0tag:blogger.com,1999:blog-5162946558386586356.post-60894740139641206442016-09-16T19:31:00.003-07:002016-09-17T20:10:58.388-07:00glaze testing blog<a href="https://www.flickr.com/photos/flowerpress/29272025061/in/photostream" title="glaze test tiles"><img src="https://c6.staticflickr.com/9/8385/29272025061_fd5551504f.jpg" width="550" height="550" alt="glaze test tiles"></a>
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This is a new blog to record my glaze testing. Please see my regular blog <a href="http://flowerpress.blogspot.com">www.flowerpress.blogspot.com</a> for everything else.
I think one of the most important thing for glaze testing will be good record keeping so I hope to keep up with recipes, outcomes and photos here.
I am focussing on Earthenware cone 04 recipes and Stoneware cone 6 firing recipes. The two clays I've been using at the moment are Keanes White Earthenware 37 and Keanes Stoneware 7.flowerpresshttp://www.blogger.com/profile/00512097103022836377noreply@blogger.com0