chiefman3d Posted March 15, 2011 Report Share Posted March 15, 2011 Have done several pieces in the past using black iron oxide wash to highlight textures and at ^6 ox. it comes out a nice iron brown color. My question is...does anyone know what the coloration affects with any of the other oxides made into a wash and then wiped off. Also, if you do these at an underglaze treatment transparant glaze over them, will they show through or mix with the transparent glaze and change it's color? Thanks for your help. You all are great. Link to comment Share on other sites More sharing options...
bciskepottery Posted March 16, 2011 Report Share Posted March 16, 2011 Here is a link to information from Vince Pitelka: http://iweb.tntech.edu/wpitelka/syllabi-handouts/handouts/patinas%20and%20glazes.htm Covers all your questions and more. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted March 16, 2011 Report Share Posted March 16, 2011 I have used copper carbonate with a bit of flux as an accent oxide. I learned this from artists from the former Soviet Union when I worked with them in Latvia. Pieces fired during this symposium were shown at NCECA in the '90s in the Eastern European Ceramics show. You apply it the same as iron oxide. I do recommend a bit of flux because fully concentrated copper can boil. Macria. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted March 16, 2011 Report Share Posted March 16, 2011 There are other things you can use...mason stains with fluxes such as a compatable fit. I used Bernard Slip with an underglaze base for low fire soda firing but used it as an accent wash. It came out buttery gold with dark accents. I wouldn't use chrome or manganese just because of the skin contact hazards and the process involves washes of heavy metals going down the drain. Slips like Albany slip substitutes may work as well. My favorite wash for oxidation was stated above, copper carbonate. It gives a black to green coloration. Marcia Link to comment Share on other sites More sharing options...
chiefman3d Posted March 19, 2011 Author Report Share Posted March 19, 2011 Thanks for the responses. I will try your Copper carbonate Marcia. Do you have a favorite flux you prefer and ratio of flux to Cu Carb? I looked at Vince's site and there is a lot of information there. Thanks Craig Link to comment Share on other sites More sharing options...
Marcia Selsor Posted March 20, 2011 Report Share Posted March 20, 2011 you can use Frit 3110 or gerstley Borate or a substitute for a flux with copper carb. Marcia Link to comment Share on other sites More sharing options...
nath5sens Posted April 5, 2014 Report Share Posted April 5, 2014 Hello Marcia Selsor DO you or anyone have photos of pieces in cone 6 with the copper carbonate (with a bit of flux, thus)? I am thinking of using it for a sculpture. Thank you Nathalie Link to comment Share on other sites More sharing options...
Colby Charpentier Posted April 5, 2014 Report Share Posted April 5, 2014 Nathalie, Testing is really the way to go, application thickness is extremely sensitive with washes, I have recently used copper washes with gerstley at c6 but my tests won't help you much if you can't duplicate my application... Images 3 and 4 in my gallery use the copper wash on porcelain, but I'm looking at other options as Bill Carty gave the go-ahead for handling Mn and all that stuff at NCECA this year.... Link to comment Share on other sites More sharing options...
DarrellVanDrooly Posted April 10, 2014 Report Share Posted April 10, 2014 Rutile = orangey brown Copper Carb+ turquoise ish Manganese Di ox = textured brown Copper oxide + black or reddish I usually mix all of these 1 part colorant, 1 part gerstley borate, .5 part ball clay/ Link to comment Share on other sites More sharing options...
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