Kaolinwasher Posted January 26, 2017 Report Share Posted January 26, 2017 I just got done grinding up some lake superior agate to use in the recreation of a sung blue Celadon. seems like the agate has a lot of Iron in it , I also milled it pretty fine 325+ mesh nice color to it . it will make up 45% of the glaze and God willing i can get some warm weather so i can fire it up I also plan on testing some souix quartzite in the same amount to see which is better . I can tell you its a pain in the but to get the stone broken down , and wearing a good dust mask is mandatory Link to comment Share on other sites More sharing options...
JohnnyK Posted January 26, 2017 Report Share Posted January 26, 2017 Still looks a little lumpy in the pan...are you sure that was a 325+mesh? Link to comment Share on other sites More sharing options...
terrim8 Posted January 26, 2017 Report Share Posted January 26, 2017 Is that a fine powder that is just stuck together in layers from milling? Sounds like a great idea and you won't have to add iron. Link to comment Share on other sites More sharing options...
Kaolinwasher Posted January 30, 2017 Author Report Share Posted January 30, 2017 The reason it looks like that is after milling i poor it into a 5 gallon bucked thru a 100 mesh screen then let it settle, it settles out hard , then i scoop it out onto a pan to dry once it drys i put it in bags, it breaks down when mixing trust me its super fine, when mixing glaze i always wet sieve ingredients thru a 100 mesh - ya it has Iron in it looks like 1% but i am not sure will do some tests which it as soon as it gets into the 40,s Link to comment Share on other sites More sharing options...
LeeU Posted January 31, 2017 Report Share Posted January 31, 2017 envy envy Your are very fortunate to be able to get this stuff and do as you wish with it ! Hope you will post some post-fire pieces here or in the Gallery. Link to comment Share on other sites More sharing options...
Kaolinwasher Posted February 3, 2017 Author Report Share Posted February 3, 2017 I have on glaze with the agate mixed up 1.5% bone ash that was milled in 3/8 to 1" quartz stones for 9 hr at 60 RPM G 200 feldspar 31% Talc 5.48% aluminum oxide 600mesh 3.91% milled lake superior agate 45% and micron size black iron oxide 1.5% as i feel the agate will not have all the Iron i need and Calcium carbonate 20%= so what i am trying to do is get the Ju celadon eutectic of 69-70 silica 9.5 to 11% alumina 1.5 to 2% Iron and 4.3 KN and 11to 13% calcium and magnesium 1 to 2 % fired in reduction to cone 8-9 just waiting for a day in the 40,s lee i will let you know how it goes sometimes when i think sorting is going to be so great it turns out its not but my guess is it has a good possibility of working out Link to comment Share on other sites More sharing options...
janicehill225 Posted February 13, 2017 Report Share Posted February 13, 2017 I think I read in Those Celadon Blues that Jun glazes need to fire a bit higher than cone 10 and that they don't work at cone 8-9. Just food for thought. But I wish you good luck. Jun glazes are amazing. Link to comment Share on other sites More sharing options...
Kaolinwasher Posted February 15, 2017 Author Report Share Posted February 15, 2017 Well i finally did the test on the agate jun glaze , it did not work out like i wanted , its not blue like i would like and i know why I used alumina oxide to make up the alumina , and its just to refractory all the test glazes that i used alumina oxide in looked junky I think i need to lower the talk as well , maybe use dolomite and use more flux but my anoka sand june looked lots better and that had no alumina oxide , i used grilling in that one i will try again but i am starting to think silica is silica Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted February 16, 2017 Report Share Posted February 16, 2017 That is actually a very traditional celadon colour, although not a chun. Try it on different clays: that test cup looks like a stoneware from here. A good, translucent Grolleg porcelain might give you the bluer results you're hoping for. Link to comment Share on other sites More sharing options...
terrim8 Posted February 16, 2017 Report Share Posted February 16, 2017 Wow! That is beautiful! Keep that recipe! You will appreciate it later but trying Grolleg will work too. You really will appreciate it later- put it in the kitchen or somewhere where you'll see it every day. By the way- that colour is one of the "in" shades this year according to my twenty something daughter. Link to comment Share on other sites More sharing options...
Kaolinwasher Posted February 16, 2017 Author Report Share Posted February 16, 2017 I think i will go to a micron alumina and up the flux it does look like it may work and i will try grollig to may two more tests Link to comment Share on other sites More sharing options...
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