Green Pooling Blue glaze - Electric Mid&Hi Fired Ceramics2024-03-29T14:41:52Zhttps://cone6pots.ning.com/forum/topics/green-pooling-blue-glaze?x=1&id=2103784%3ATopic%3A135006&feed=yes&xn_auth=noFor the original poster. Here…tag:cone6pots.ning.com,2016-12-01:2103784:Comment:1388552016-12-01T04:29:33.021ZTileworkshttps://cone6pots.ning.com/profile/IvyGlasgow
For the original poster. Here is a glaze that shows some action! Looks great to me. <a href="http://glazy.org/recipes/3897" target="_blank">http://glazy.org/recipes/3897</a>
For the original poster. Here is a glaze that shows some action! Looks great to me. <a href="http://glazy.org/recipes/3897" target="_blank">http://glazy.org/recipes/3897</a> Thanks Tom - I just added Cob…tag:cone6pots.ning.com,2016-10-25:2103784:Comment:1379052016-10-25T00:01:51.921ZNorm Stuarthttps://cone6pots.ning.com/profile/NormStuart
<p>Thanks Tom - I just added Cobalt to the list of Acid formers.</p>
<p>Thanks Tom - I just added Cobalt to the list of Acid formers.</p> Norm:
I think cobalt needs to…tag:cone6pots.ning.com,2016-10-24:2103784:Comment:1379032016-10-24T20:04:46.368ZTom Andersonhttps://cone6pots.ning.com/profile/TomAnderson
<p>Norm:</p>
<p>I think cobalt needs to be added to the acidic column: my cobalt crystalline glazes are much more fluid than the others. In fact, it is not uncommon to see "boiling" marks: Fara Shimbo I believed used the word "felting" to describe the surface effect.</p>
<p></p>
<p>I have long preached about the purity levels of the materials we purchase.It is common to see 8% sodium in the alumina we purchase. Silica can be as low as 80% pure, and the rest being sodium, potassium, selenium,…</p>
<p>Norm:</p>
<p>I think cobalt needs to be added to the acidic column: my cobalt crystalline glazes are much more fluid than the others. In fact, it is not uncommon to see "boiling" marks: Fara Shimbo I believed used the word "felting" to describe the surface effect.</p>
<p></p>
<p>I have long preached about the purity levels of the materials we purchase.It is common to see 8% sodium in the alumina we purchase. Silica can be as low as 80% pure, and the rest being sodium, potassium, selenium, and sulfur. Yellow zinc is also notoriously impure: with high levels of sulfur, cadmium, and selenium. Glaze calculators have a specific analysis for a specific type of these products: which can be much lower than we actually purchase. When I switched to Imsil A-25 and French process zinc, and higher purity Nep Sy: many of the problems went away,</p>
<p></p>
<p>Tom</p> Tom - I never studied high te…tag:cone6pots.ning.com,2016-10-24:2103784:Comment:1380682016-10-24T05:05:35.129ZNorm Stuarthttps://cone6pots.ning.com/profile/NormStuart
<p>Tom - I never studied high temperature chemistry so I simply take the listing below as a given.</p>
<p></p>
<table border="0" cellspacing="0" width="439">
<colgroup><col width="126"></col><col width="313"></col></colgroup><tbody><tr><td class="xl69" colspan="2" height="21" width="439"><strong>Aklaine Fluxing Oxides R2O and RO</strong></td>
</tr>
<tr><td class="xl67" height="21">AG2O</td>
<td class="xl67">silver</td>
</tr>
<tr><td class="xl67" height="21">K2O…</td>
</tr>
</tbody>
</table>
<p>Tom - I never studied high temperature chemistry so I simply take the listing below as a given.</p>
<p></p>
<table width="439" cellspacing="0" border="0">
<colgroup><col width="126"></col><col width="313"></col></colgroup><tbody><tr><td class="xl69" colspan="2" width="439" height="21"><strong>Aklaine Fluxing Oxides R2O and RO</strong></td>
</tr>
<tr><td class="xl67" height="21">AG2O</td>
<td class="xl67">silver</td>
</tr>
<tr><td class="xl67" height="21">K2O</td>
<td class="xl67">potassium</td>
</tr>
<tr><td class="xl67" height="21">Li2O</td>
<td class="xl67">lithium</td>
</tr>
<tr><td class="xl67" height="21">Na2O</td>
<td class="xl67">sodium</td>
</tr>
<tr><td class="xl67" height="21">+</td>
<td class="xl67"></td>
</tr>
<tr><td class="xl67" height="21">BaO</td>
<td class="xl67">barium</td>
</tr>
<tr><td class="xl67" height="21">CaO</td>
<td class="xl67">calcium</td>
</tr>
<tr><td class="xl67" height="21">CuO</td>
<td class="xl67">copper</td>
</tr>
<tr><td class="xl67" height="21">FeO</td>
<td class="xl67">iron</td>
</tr>
<tr><td class="xl67" height="21">MgO</td>
<td class="xl67">magnesium</td>
</tr>
<tr><td class="xl67" height="21">SrO</td>
<td class="xl67">strontium</td>
</tr>
<tr><td class="xl67" height="21"></td>
<td class="xl67"></td>
</tr>
<tr><td class="xl69" colspan="2" height="21"><strong>Neutral or Refractory Oxides R2O3</strong></td>
</tr>
<tr><td class="xl67" height="21">Bi2O3</td>
<td class="xl67">bismuth</td>
</tr>
<tr><td class="xl67" height="21">CO</td>
<td class="xl67">carbon monoxide</td>
</tr>
<tr><td class="xl67" height="21">NO</td>
<td class="xl67">nitric oxide</td>
</tr>
<tr><td class="xl67" height="21"></td>
<td class="xl67"></td>
</tr>
<tr><td class="xl69" colspan="2" height="21"><strong>Both Refractory and Amphoteric</strong></td>
</tr>
<tr><td class="xl67" height="21">Al2O3</td>
<td class="xl67">alumina</td>
</tr>
<tr><td class="xl67" height="21">B2O3</td>
<td class="xl67">boron - also "glass forming"</td>
</tr>
<tr><td class="xl71" height="21">Cr2O3</td>
<td class="xl67">chrome</td>
</tr>
<tr><td class="xl68" height="21"></td>
<td class="xl67"></td>
</tr>
<tr><td class="xl69" colspan="2" height="21"><strong>Amphoteric - RO and R3O4</strong></td>
</tr>
<tr><td class="xl70" colspan="2" height="21"><strong>Basic to acids, Acidic to bases</strong></td>
</tr>
<tr><td class="xl67" height="21">GeO</td>
<td class="xl67">germanium monoxide, eutectic only</td>
</tr>
<tr><td class="xl67" height="21">PbO</td>
<td class="xl67">lead</td>
</tr>
<tr><td class="xl67" height="21">Pb3O4</td>
<td class="xl67">lead</td>
</tr>
<tr><td class="xl67" height="20">SnO</td>
<td class="xl67">tin</td>
</tr>
<tr><td class="xl67" height="20">ZnO</td>
<td class="xl67">zinc</td>
</tr>
<tr><td height="20"></td>
<td></td>
</tr>
<tr><td class="xl69" colspan="2" height="20"><strong>Acidic Glass Forming Oxides</strong></td>
</tr>
<tr><td class="xl67" height="20">CoO</td>
<td class="xl67">cobalt</td>
</tr>
<tr><td class="xl67" height="20">GeO2</td>
<td class="xl67">germanium</td>
</tr>
<tr><td class="xl67" height="20">MnO2</td>
<td class="xl67">manganese</td>
</tr>
<tr><td class="xl67" height="21">SiO2</td>
<td class="xl67">silica</td>
</tr>
<tr><td class="xl67" height="20">TiO2</td>
<td class="xl67">titanium</td>
</tr>
<tr><td class="xl67" height="20">ZrO2</td>
<td class="xl67">zircon</td>
</tr>
<tr><td class="xl67" height="20"></td>
<td class="xl67"></td>
</tr>
<tr><td class="xl67" height="20">CO2</td>
<td class="xl67">carbon</td>
</tr>
<tr><td class="xl67" height="20">NO2</td>
<td class="xl67">nitrogen</td>
</tr>
<tr><td class="xl67" height="20">NO3</td>
<td class="xl67">nitrogen</td>
</tr>
<tr><td class="xl67" height="20">SO2</td>
<td class="xl67">sulfur</td>
</tr>
<tr><td class="xl67" height="20">SO3</td>
<td class="xl67"><p>sulfur</p>
</td>
</tr>
</tbody>
</table>
<p></p>
<p>I understand the concept of how they're categorized, but the pH of a molten glaze is a conceptualization which while very useful is difficult for me to reconcile with my day to day experience of acids and bases.</p>
<p></p>
<p>Just from experience though when I read a colorant makes a color change in an "alkaline glaze" the sure solution if adding lithium carbonate. Trying to achieve the same color-shift with sodium can be frustrating.</p>
<p></p>
<p></p>
<p><cite>Tom Anderson said:</cite></p>
<blockquote cite="http://cone6pots.ning.com/forum/topics/green-pooling-blue-glaze?commentId=2103784%3AComment%3A138064&xg_source=msg_com_forum#2103784Comment138064"><div><p>Norm:</p>
<p>I have studied amphoretic oxides for years: not a lot of good information out there. The one thing I have studied, and holds a fair about of truth is the crystal habit of each element we use. Crystalline glaze use silica, zinc, and lithium: all of which have hexagonal crystal structures elementally. Sodium and Potassium have cubic crystals structures: and show up in crystalline glazes as course threading, spikes, and needles.</p>
<p>The other issue is band gap: which for ease of understanding would be small, medium and large magnets on a molecular level. Sodium has a band gap of 1.79 and lithium is 0.024: which makes lithium a non evasive flux in a glaze. By non evasive: I mean it does not have enough molecular polarity to attract other elements: sodium however does. In addition, high sodium glazes can alter the final structure of the glass because it's cubic crystal structure is the most powerful influence. Imagine shining a light through a six sided prism (hexagon), and a four sided prism (cubic): how it refracts light changes.</p>
<p>Tom</p>
</div>
</blockquote> Norm:
I have studied amphoret…tag:cone6pots.ning.com,2016-10-24:2103784:Comment:1380642016-10-24T00:46:56.658ZTom Andersonhttps://cone6pots.ning.com/profile/TomAnderson
<p>Norm:</p>
<p>I have studied amphoretic oxides for years: not a lot of good information out there. The one thing I have studied, and holds a fair about of truth is the crystal habit of each element we use. Crystalline glaze use silica, zinc, and lithium: all of which have hexagonal crystal structures elementally. Sodium and Potassium have cubic crystals structures: and show up in crystalline glazes as course threading, spikes, and needles.</p>
<p>The other issue is band gap: which for ease of…</p>
<p>Norm:</p>
<p>I have studied amphoretic oxides for years: not a lot of good information out there. The one thing I have studied, and holds a fair about of truth is the crystal habit of each element we use. Crystalline glaze use silica, zinc, and lithium: all of which have hexagonal crystal structures elementally. Sodium and Potassium have cubic crystals structures: and show up in crystalline glazes as course threading, spikes, and needles.</p>
<p>The other issue is band gap: which for ease of understanding would be small, medium and large magnets on a molecular level. Sodium has a band gap of 1.79 and lithium is 0.024: which makes lithium a non evasive flux in a glaze. By non evasive: I mean it does not have enough molecular polarity to attract other elements: sodium however does. In addition, high sodium glazes can alter the final structure of the glass because it's cubic crystal structure is the most powerful influence. Imagine shining a light through a six sided prism (hexagon), and a four sided prism (cubic): how it refracts light changes.</p>
<p>Tom</p> I have no idea. I ordered fro…tag:cone6pots.ning.com,2016-10-23:2103784:Comment:1380612016-10-23T05:15:42.674ZTileworkshttps://cone6pots.ning.com/profile/IvyGlasgow
<p>I have no idea. I ordered from them a few times a year, so I was disappointed when they folded. I do know that they were hacked badly about a year before they closed up shop.</p>
<p>There are other places that will custom mix your own recipe for you, but not other places where you can also order other artists' glazes.</p>
<p>I have no idea. I ordered from them a few times a year, so I was disappointed when they folded. I do know that they were hacked badly about a year before they closed up shop.</p>
<p>There are other places that will custom mix your own recipe for you, but not other places where you can also order other artists' glazes.</p> Ivy - Do you know why Glazemi…tag:cone6pots.ning.com,2016-10-23:2103784:Comment:1380602016-10-23T05:03:21.759ZNorm Stuarthttps://cone6pots.ning.com/profile/NormStuart
<p>Ivy - Do you know why Glazemixer stopped selling glaze?</p>
<p></p>
<p>They were out of business before I had an opportunity to use their services, so I have no idea who he/she/they were or where they were located.</p>
<p></p>
<p>I suppose any of us with 50 pound bags of raw materials could do the same, but it's probably small margins.</p>
<p>Ivy - Do you know why Glazemixer stopped selling glaze?</p>
<p></p>
<p>They were out of business before I had an opportunity to use their services, so I have no idea who he/she/they were or where they were located.</p>
<p></p>
<p>I suppose any of us with 50 pound bags of raw materials could do the same, but it's probably small margins.</p> Glad you like it :-) It is a…tag:cone6pots.ning.com,2016-10-23:2103784:Comment:1381562016-10-23T03:44:43.761ZTileworkshttps://cone6pots.ning.com/profile/IvyGlasgow
<p>Glad you like it :-) It is a glaze recipe we developed for our tile studio. I am sorry I cannot share the recipe but I am glad that you liked the color :-)</p>
<p>I miss Glazemixer, it was a good service. is there anything that has come up to replace it?</p>
<p>Here is a shot of Green Pooling Blue as it was originally intended - on a tile. …<a href="http://storage.ning.com/topology/rest/1.0/file/get/3127180145?profile=original" target="_self"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/3127180145?profile=original" width="226"></img></a></p>
<p>Glad you like it :-) It is a glaze recipe we developed for our tile studio. I am sorry I cannot share the recipe but I am glad that you liked the color :-)</p>
<p>I miss Glazemixer, it was a good service. is there anything that has come up to replace it?</p>
<p>Here is a shot of Green Pooling Blue as it was originally intended - on a tile. <a href="http://storage.ning.com/topology/rest/1.0/file/get/3127180145?profile=original" target="_self"><img src="http://storage.ning.com/topology/rest/1.0/file/get/3127180145?profile=original" class="align-full" width="226"/></a></p> From trial and error for hund…tag:cone6pots.ning.com,2016-07-11:2103784:Comment:1350262016-07-11T01:05:11.164ZNorm Stuarthttps://cone6pots.ning.com/profile/NormStuart
<p>From trial and error for hundreds of years potters have known that some colorants looked different in and "akaline glaze than they did in their usual glaze.</p>
<p></p>
<p>Much of the collected wisdom can be found here. <a href="https://digitalfire.com/4sight/properties/ceramic_property_glaze_color.html" rel="nofollow" target="_blank">https://digitalfire.com/4sight/properties/ceramic_property_glaze_co...</a></p>
<p></p>
<p>I haven't found these terms particularly helpful, nor do I think…</p>
<p>From trial and error for hundreds of years potters have known that some colorants looked different in and "akaline glaze than they did in their usual glaze.</p>
<p></p>
<p>Much of the collected wisdom can be found here. <a rel="nofollow" href="https://digitalfire.com/4sight/properties/ceramic_property_glaze_color.html" target="_blank">https://digitalfire.com/4sight/properties/ceramic_property_glaze_co...</a></p>
<p></p>
<p>I haven't found these terms particularly helpful, nor do I think they relate well to the "pH of glazes in high temperature chemistry" if you look into that. So I refer to color change ingredients like lithium, zinc, tin, barium and less strongly strontium etc. I can give you an idea of why that is, but not <strong>the</strong> specific answer.</p>
<p></p>
<p>In short what we perceive as color are generally the portion of the wavelengths of white light which are reflected back after hitting an object. <strong>Changing the elements and crystalline structure of a glass can significantly change which wavelengths get reflected, and thus what we call color.</strong></p>
<p></p>
<p>Titanium Dioxide creates crystals we can't see on the surface of a glaze and scatters the light so the surface looks matte, that's pretty easy for me to understand. But take the fact that tin oxide with green chrome oxide create something which reflects pink or red. What is the particular structural change in the glass which makes the green look red? I've read a lot about the topic and I still haven't the slightest idea. And at some point I realized I didn't need to know why, it's just a color change combination.</p>
<p></p>
<p>In a very real way we're making man-made gems on the surface of our ceramic, and gems have all sort of different colors, created sometimes by tiny little changes in structure.</p>
<p></p>
<p>Take white alumina as an example - in one crystal it's sapphire, a different color depending on the impurities. - <a rel="nofollow" href="https://en.wikipedia.org/wiki/Sapphire" target="_blank">https://en.wikipedia.org/wiki/Sapphire</a></p>
<p></p>
<p>Just a chunk of alumina surrounded by some carbon, the same stuff as coal.</p>
<p><a target="_self" href="http://storage.ning.com/topology/rest/1.0/file/get/3127175019?profile=original"><img class="align-left" src="http://storage.ning.com/topology/rest/1.0/file/get/3127175019?profile=original" width="392"/></a></p>
<p></p>
<p></p>
<p></p> Thanks! I think I'll try star…tag:cone6pots.ning.com,2016-07-10:2103784:Comment:1348402016-07-10T19:41:07.163ZMary Lou Eshelmanhttps://cone6pots.ning.com/profile/MaryLouEshelman
Thanks! I think I'll try starting with Watercolor Blue, which I have used before and liked. It is the closest thing to Green Pooling Blue that I know of. Can you explain "color shift copper" a little?
Thanks! I think I'll try starting with Watercolor Blue, which I have used before and liked. It is the closest thing to Green Pooling Blue that I know of. Can you explain "color shift copper" a little?