Sabbir Posted January 17, 2020 Report Share Posted January 17, 2020 Hi,Everyone, its my 2nd post here, first post was about micro pin hole problem, which already solved, it was body material problem, i need some suggestion about mason stain color, i am using potash feldsper, soda feldsper, quartz, zirconium silicate,whitting,barium carbonate,talc, kaoline, zinc oxide on my glaze recepe, when i am trying devlop some color like CBL, MINT GREEN, orange color, i can not get appropriate result, how can i get appropriate result?? If there have Any suggestion please share with me, how can i devlope more glossy white& color base composition from this material? Thank you. Link to comment Share on other sites More sharing options...
liambesaw Posted January 17, 2020 Report Share Posted January 17, 2020 You'll need to consult the mason stain reference table to make sure your glaze is compatible with the stain you wish to use. http://www.masoncolor.com/reference-guide Some green stains will be incompatible with glazes that contain zinc, some reds require a certain amount of calcium, etc. Link to comment Share on other sites More sharing options...
Sabbir Posted January 17, 2020 Author Report Share Posted January 17, 2020 @liambesaw thank you, can you suggest me that how can i get pure glossy white glaze from this material? Link to comment Share on other sites More sharing options...
Bill Kielb Posted January 17, 2020 Report Share Posted January 17, 2020 1 hour ago, Sabbir said: @liambesaw thank you, can you suggest me that how can i get pure glossy white glaze from this material? An easy way would be to find a clear gloss that suits your need and whatever cone you fire to. Then test that it fits your claybody then you can opacify or color white with several common oxides. Common would be: Tin oxide - warm white, Typically starting about 4% (generally expensive) Zirconium oxide- Stark white Typically starting at 8% (generally prone to metal marking) Titanium oxide - Streaky white Typically Starting at 4% (generally a bit variable or random) Mixing and matching these is doable and the blend would provide various shades of white. You can find many recipes on Glazy,org maybe search by cone , gloss or matte, and color, then match the materials you have on hand. Link to comment Share on other sites More sharing options...
neilestrick Posted January 17, 2020 Report Share Posted January 17, 2020 Orange is tough, best to use an inclusion pigment. There are a lot of Mason stains that will give mint green, but copper carbonate can also do it depending on the glaze and firing. What cone are you firing at? Link to comment Share on other sites More sharing options...
Sabbir Posted January 18, 2020 Author Report Share Posted January 18, 2020 @neilestrick, thank you, Fired at cone 6, some color are already prepared, but did not get better shining. Link to comment Share on other sites More sharing options...
Min Posted January 18, 2020 Report Share Posted January 18, 2020 8 hours ago, Sabbir said: i am using potash feldsper, soda feldsper, quartz, zirconium silicate,whitting,barium carbonate,talc, kaoline, zinc oxide on my glaze recepe 1 hour ago, Sabbir said: Fired at cone 6 I'm not seeing anything that contains boron. Is a boron frit, gerstley borate or even ulexite available to you? Boron isn't necessary for high fire but it's really beneficial to get a good melt at cone 6. Link to comment Share on other sites More sharing options...
Sabbir Posted January 18, 2020 Author Report Share Posted January 18, 2020 @Min thank you,boron not available here, how can i improve with out boron?? Link to comment Share on other sites More sharing options...
Dick White Posted January 18, 2020 Report Share Posted January 18, 2020 Can you get nepheline syenite? That's a feldspathic mineral that has more sodium than soda feldspar, so it will melt sooner. Also research Bristol glazes. Those are glazes first used in the Bristol England potteries in the mid-19th century that contained zinc oxide as one of the fluxes in place of the toxic lead oxide. These will likely not be as glossy as you want, because you'll need boron to get a better gloss at cone 6. Link to comment Share on other sites More sharing options...
Bill Kielb Posted January 18, 2020 Report Share Posted January 18, 2020 2 hours ago, Dick White said: Can you get nepheline syenite? That's a feldspathic mineral that has more sodium than soda feldspar, so it will melt sooner. Also research Bristol glazes. Those are glazes first used in the Bristol England potteries in the mid-19th century that contained zinc oxide as one of the fluxes in place of the toxic lead oxide. These will likely not be as glossy as you want, because you'll need boron to get a better gloss at cone 6. Dick has a good idea. A Bristol glaze can melt lower than cone 6 and as a starting point: Zinc =0.2 - 0.4 in a .70 RO base. I would try a quick search of Glazy.org for Bristol clear glaze and see if one matches your material on hand. Zinc based clears have a tendency to mess with colors though so in the end it might be easiest to get a boron Fritt as your source.. Link to comment Share on other sites More sharing options...
neilestrick Posted January 18, 2020 Report Share Posted January 18, 2020 2 hours ago, Dick White said: Can you get nepheline syenite? That's a feldspathic mineral that has more sodium than soda feldspar, so it will melt sooner. Also research Bristol glazes. Those are glazes first used in the Bristol England potteries in the mid-19th century that contained zinc oxide as one of the fluxes in place of the toxic lead oxide. These will likely not be as glossy as you want, because you'll need boron to get a better gloss at cone 6. He said in his original post that he has a soda spar, so that should work. Link to comment Share on other sites More sharing options...
Dick White Posted January 19, 2020 Report Share Posted January 19, 2020 8 hours ago, neilestrick said: He said in his original post that he has a soda spar, so that should work. Neph sye is mo'betta soda. If the soda spar is not melting enough at cone 6 without any boron available, then step up to more sodium in the neph sye. Link to comment Share on other sites More sharing options...
Min Posted January 19, 2020 Report Share Posted January 19, 2020 20 hours ago, Sabbir said: boron not available here Can you order some in from India? I did a quick Google search, Ravi's manufactures frits, including some boron ones. You could contact them and ask who the distributors are in your area. Also found that Bhoomi Pottery has Gerstley Borate. If you are going to be working at cone 6 I really do think that it would be worth finding a source of boron. A zinc fluxed Bristol glaze is one possibility of avoiding boron but having boron available will open up many more glaze choices. Link to comment Share on other sites More sharing options...
Sabbir Posted January 19, 2020 Author Report Share Posted January 19, 2020 @Min thank you, i will contact with them. Link to comment Share on other sites More sharing options...
Pres Posted January 19, 2020 Report Share Posted January 19, 2020 That will also let your move away from the hazards of barium. best, Pres Link to comment Share on other sites More sharing options...
Sabbir Posted January 21, 2020 Author Report Share Posted January 21, 2020 On 1/20/2020 at 1:07 AM, Pres said: That will also let your move away from the hazards of barium. best, Pres Thank you Link to comment Share on other sites More sharing options...
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