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Post by Ferenc Halmos on Dec 30, 2015 12:01:16 GMT -6
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Post by tileman2 on Dec 30, 2015 15:30:34 GMT -6
The only time I have seen these types of oddities, is when I added a small amount of Vandium.
Tom
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Post by Peter Sorensen on Dec 30, 2015 18:46:02 GMT -6
Hi Ference
I am curius is this in a clean cobalt glaze
Peter
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Post by Ferenc Halmos on Dec 31, 2015 3:22:04 GMT -6
Hi Ference I am curius is this in a clean cobalt glaze Peter Hi Peter. Yes these are clean cobalt coloured glazes. Na,K,Zn,Si,Ti,Co |
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Post by sherri on Jan 1, 2016 23:41:56 GMT -6
Fun stuff. The crazing at the top of the pot caught my eye. I was just getting caught up with my Ceramics Monthly and read that Richard Hensley - he's does wheel thrown porcelain but not crystalline - swaps out 1/3 to 1/2 of his regular silica for Imsil Silica (an amorphous micronized silica) that you can get from Highwater Clay or Laguna Clay and it completely eliminates crazing. Beware however - more than that ratio and it can increase crawing. I did just one test with it so far - before I'd read the article from Hensley. I purchased the Imsil silica because it's a more pure form of silica so it's said to brighten colors. I didn't notice any difference in the brightness of the colors in my recipe - I used all Imsil silica in that recipe (no Sil-Co-Sil). I have been dealing with a crawling issue anyways lately and trying different solutions to see what works best - crawling is a common issue with single fire. So it did crawl in the 100% Imsil Silica recipe here and there - but not more than the Sil-Co-Sil silica that Laguna has recently substituted it's regular silica with. Good luck.  |
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Post by jfox on Jan 2, 2016 10:06:14 GMT -6
Sherri
i use about 8% ball clay in my singlefire glazes and get very little crawling i think it works better than 2-5% bentonite
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Post by evan cornish-keefe on Jan 13, 2016 13:23:29 GMT -6
Good stuff!
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Post by mohawkpiper on Jan 15, 2016 22:20:46 GMT -6
Very cool Feri. 8 cm is a pretty good size! Are all the pics of the same piece? Mind sharing a pic of the whole thing? I like those little square shaped oddities. I also like the streaky spots in the yellow glaze.
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Post by Ferenc Halmos on Jan 17, 2016 15:07:00 GMT -6
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Post by winner on Aug 8, 2016 21:06:43 GMT -6
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