tag:blogger.com,1999:blog-4075682991942523126.post8824660607186446051..comments2022-01-28T12:44:33.885-08:00Comments on Morning Crane Tea: Park Jong Il’s Chatchan and ChawanCho Hakhttp://www.blogger.com/profile/04798639210955177212noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-4075682991942523126.post-51443383638533800362010-12-02T10:10:38.030-08:002010-12-02T10:10:38.030-08:00Hi Jo (and/or Virginia)
Thanks for this question. ...Hi Jo (and/or Virginia)<br />Thanks for this question. True traditional celadon comes from the use of the precise amount of iron (usually 1% to 2%) in the glaze and or clay body fired in the precise reduction atmosphere. There are stories of the use of ash from a certain type of tree and stories of black iron oxide in black clay dig from certain spots in the mountains for the source of iron for this secret color. If the atmosphere is reduced too much the glaze becomes grayer. If the atmosphere is reduced too little the glaze is more yellow. So true celadon is only made in a reduction atmosphere. <br />That said, you didn’t ask about “true celadon” you asked about the “color” of celadon. The color of celadon can be achieved in oxidation and there are places on the web where you can find recipes or commercial glazes. I know you would like me to give you the glaze recipe for an “oxidation celadon” but I don’t have one. Some years ago Mary, my wife, did develop such a glaze for cone 6 oxidation. It was a perfect match for 12th century celadon in color and shine. That was at the university and we don’t fire at cone 6 anymore so that glaze formula has been lost. Since it was for oxidation, I think she used copper for her green and perhaps iron or manganese to tame it a little plus maybe a miniscule amount of cobalt also for color and a little ash to reduce the shine. It took a number of tests and these may not be the right ingredients. It has been a long time since we had this glaze or I thought about it.<br />Since you are interested in celadon, you might be interested in Gangjin, Korea. (www.GangjinCeladon.com) Gangjin historically produced at least 80% of the Korean celadon found in museums around the world today. The book, The Radiance of Jade and the Clarity of Water: Korean Ceramics from The Ataka Collection, has an analysis of several true celadon glazes. <br />There is a non-profit tea and ceramics tour going to Gangjin this spring (www.TeaTourKorea.com). In addition, Gangjin is holding their annual festival in August. They have an international juried exhibit and provide workshops for the exhibitors. That is followed by a ceramic artist’s tour of Korea. You can gain access to those experiences at www.GamgjinExhibit.blogspot.com. <br />Korea has a long history when it comes to celadon. “The Kings of Goryeo Dynasty loved celadon and supported its production. As a result, Korea’s ceramic artists became very skilled at producing celadon. During the reign of King Injong (who ruled 1123-1147 CE) the Goryeo court was visited by a Chinese calligrapher named Hsu Ching. Hsu Ching was so impressed by Korea’s chungja (celadon) that he devoted three chapters of his report to “wares and vessels”. When we consider that the Chinese normally believe their culture superior to all other countries, this was quite a complement. Another Sung-dynasty Chinese, author of the T’ao-p’ing Lao Jen heaped praise on the celadon of Korea. His exact words in translation were:<br /><br />“The books of the Academy, the wines of the Palace, the inkstones of Tuan, the peonies of Lo-yang, the tea of Ch’ienchou, the brocades of Shu, the porcelains of Ting, the ‘secret color’ (wares) of Kao-li ( Korea) -- these are all to be ranked as ‘First under Heaven.’ “ <br /><br />(These quotes come from our web site www.GangjinCeladon.com and from the book The World of Korean Ceramics by Jon and Alan Covell. A signed copy of that out of print book can be purchased through us. Just email me for details.)Cho Hakhttps://www.blogger.com/profile/04798639210955177212noreply@blogger.comtag:blogger.com,1999:blog-4075682991942523126.post-57189021258222542332010-11-13T19:05:58.435-08:002010-11-13T19:05:58.435-08:00Dear Cho Hak;
My question is: can I achieve the ce...Dear Cho Hak;<br />My question is: can I achieve the celadon color using an oxidizing kiln? Or is it only achieved in a reduction kiln? <br />Thanks in advance.<br />Jovirginia garcíahttps://www.blogger.com/profile/03413678390770451253noreply@blogger.comtag:blogger.com,1999:blog-4075682991942523126.post-71477373434092897442010-02-14T20:14:37.555-08:002010-02-14T20:14:37.555-08:00Petr,
While waiting to hear more from my friends i...Petr,<br />While waiting to hear more from my friends in Korea, I did a little research. There is a huge copper mine in North Korea and many other minerals as well - including potentially the largest gold deposit in the world. The copper mine can produce raw copper between 35% and 48% pure. So it stands to reason that the early use of copper was not pure copper. Also Korea used copper on many celadon pieces very early. Stay tuned . . .Cho Hakhttps://www.blogger.com/profile/04798639210955177212noreply@blogger.comtag:blogger.com,1999:blog-4075682991942523126.post-54807983060708510902010-02-10T07:45:22.909-08:002010-02-10T07:45:22.909-08:00Hi Petr,
I'll try to find the answer to your q...Hi Petr,<br />I'll try to find the answer to your question. I do know that most of the ware that used copper red early was produced in an area that is now in North Korea. <br />I'll post a couple of examples of Korea's early and more recent copper red here when I get a chance. The tea ware artist Kim Euk Joo is using it on some of his tea ware. He lives in Myngyeong so you might be able to discuss it with him when you are there for the Mungyeong Tea Bowl Festival. <br />Recently, I made an inquiry into travel to North Korea to see their art. In a few months I'll know if such a tour is possible for a small group of artists. NK has opened their doors to travel there again this year (2010). I'm working through an American travel agent who has been there 19 times with small groups. If anyone is interested in learning more about an artist's tour to North Korea, contact me. At this point I have no idea if such a tour is possible.<br />Of course, If you want to meet Kim Euk Joo join the Korean Tea Tour at www.TeaTourKorea.com.Cho Hakhttps://www.blogger.com/profile/04798639210955177212noreply@blogger.comtag:blogger.com,1999:blog-4075682991942523126.post-8765164796211888252010-02-09T06:48:34.318-08:002010-02-09T06:48:34.318-08:00Dear Arthur,
So many interesting information and ...Dear Arthur,<br /><br />So many interesting information and thoughts in one post- that is great. On the end you have mentioned that Korean potters used red copper before Chinese...Do you know what material (as source of copper) they used in past and what they use now? <br />Thank youPetr Novákhttps://www.blogger.com/profile/11517473309667122386noreply@blogger.com