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Roberta12 reacted to a post in a topic: Full Shelves or Half Shelves in Electric Kilns
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Roberta12 reacted to a post in a topic: Have glaze chemical prices forced you to make changes in your White glazes?
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So a breaking blue glaze over a white slip over an iron bearing stoneware body? Maybe with an ash type glaze on the foot and rim?
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Full Shelves or Half Shelves in Electric Kilns
Min replied to HenryBurlingame's topic in Equipment Use and Repair
Tacoma Clay Art Center carries Corelite shelves. You probably already know this but if you order anything from Seattle Pottery Supply I would strongly suggest asking for the current price, not prices shown on their website. -
Which effect are you looking to get? Everything or rim and foot or ?
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Impending pit fire - suggested colorants and combustibles
Min replied to DDMiller's topic in Clay and Glaze Chemistry
I've used dried seaweed, banana peels and copper carbonate mostly so not a huge help with suggestions. Link below with more suggestions, it is behind a paywall but you can access 3 free articles a month. I copy/pasted the chart and snippet from that link below also. If you use ferric chloride wear protective gear while applying it and obviously avoid fumes from the pit firing. https://ceramicartsnetwork.org/pottery-making-illustrated/pottery-making-illustrated-article/A-Pit-Firing-Color-Palette -
Min reacted to a post in a topic: Pouring Boxes - two versions
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Min reacted to a post in a topic: Pouring Boxes - two versions
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Min reacted to a post in a topic: A large 24" tall sculpture has some crazing. Is there anything I can do to save it? Sorry if this is wrong forum
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Min reacted to a post in a topic: Custar Feldspar now not available again
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Callie Beller Diesel reacted to a post in a topic: Potash Feldspar comparisons of Custer, Mahavir, G200EU and Vardhman
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Min reacted to a post in a topic: glaze test tiles (can I use both front and back side?)
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@Dot, the op hasn't been back since they made their post. I would send them a private message with your extruder question. To send a private message click on their name then the little envelope at the top of the page that comes up and follow the prompts. They will get an email letting them know of your message.
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This came up the other day, might help. https://community.ceramicartsdaily.org/topic/41668-midfire-clay-short-when-recycled/ Given your reclaim is already on plaster slabs if it is still fairly wet I'ld put it back into a bucket with some more water and add the blunged bentonite or ball clay/bentonite and slurry mix it again with the plasticizers. The smaller the clay particles the greater plasticity you will get from them, bentonite is much finer than ball clay which in turn is much finer than EPK.
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Clay recommendations for wheel thrown sculptural work
Min replied to tman123's topic in Studio Operations and Making Work
My understanding is the Ardvark Soldate 60 is is 50 Lincoln Fireclay, 25 OM4, 25- 60 mesh sand and 2.5 spar. Yup, it is gritty and very workable and forgiving. -
Magnolia Mud Research reacted to a post in a topic: Clay recommendations for wheel thrown sculptural work
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Clay recommendations for wheel thrown sculptural work
Min replied to tman123's topic in Studio Operations and Making Work
Soldate 60 is great stuff. It's a cone 10 clay but for sculptural firing to midrange would work too. I've known people use it for Raku firing also. -
Could go faster to 1500F then resume your regular schedule. edit: I just read your other post about this in the another section, given they are very important pieces the safest bet would be to do the same schedule but without any candling (if you did this). Maybe go a bit faster but not breakneck speed. I'm going to delete your duplicate post.
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PeterH reacted to a post in a topic: Reitz Green without Gerstley Borate?
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I have the analysis for Vardhman, I'll add a pinned thread on potash feldspar changes. edit: Pin link added here. https://community.ceramicartsdaily.org/topic/41698-potash-feldspar-comparisons-of-custer-mahavir-g200eu-and-vardhman/
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Good find Peter. When I look at the analysis for both there are other differences too though. Definitely a fragile mechanism to get the green. Reitz Green with Gillespie doesn't need the lithium carb and dolomite additions when I played around with altering the recipe, the silica is a tiny bit higher in the Gillespie version but given the differences in the Floating Blue recipe that might or might not be consequential, I don't know. A simple addition of iron with a reduction of cobalt would be simple to test Hansen's theory if it translates to Reitz Green also. I suppose RIO would be the logical material to add as long as speckles don't become an issue. Or black iron oxide might be better if you have it.
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Min reacted to a post in a topic: Reitz Green without Gerstley Borate?
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I would. 1550F is approx cone 012 so pots are going to soak up glaze much faster than a typical 06-04 bisque.