i noticed that the ratio of strontium to lithium in the steven hill glaze was 4:1. I thought it might be interesting to see what that would do sprayed on my glazes, before adding new glazes to my studio. Both mugs are glazed the same. The one on the right has the stron/lit spray (20g stron, 5 lith, 100 H20)...I may have sprayed too much (i'm not a sprayer) ....it definately added flow, maybe a little crystalization? the second pix is a little out of focus. these fired to cone 6 and were on the same shelf, next to each other

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Comment by Donna Ferrara on March 16, 2012 at 4:25pm

thanks, I've been working with this base for almost 16 yrs, and every time  I think I'm done with it, I get excited about it again--I'm looking forward to seeing what your results

Comment by Jan Wallace on March 16, 2012 at 2:15pm

Thanks again Donna. I understand now that you sprayed the stront and lithium over the white and green glaze. This certainly is a lovely glaze with some great variations when colourants are added, but you have a flair for decorating and your technique obviously makes for your great results. I will let you know how I go. :)

Comment by Donna Ferrara on March 16, 2012 at 5:00am

hi Jan

no , I just sprayed a mix of stron/lith  as stated above.  the glaze had the cu.   here is the recipe. this glaze was given to me by Andy Quient.  I have not tested it for food safety, though it has been in my dishwasher hundreds of time, and i never store food in my ceramic ware, I suggest if you use it, you test it.  

Andy Quient's copper matte (in percentages)

Corn stone  21%

Ferro 3134  22

Dolomite     21

om4 ball clay  15

flint              20

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                    99

Bentonite         2%

CuCo3             4%

water              9 qts 19 oz including cleaning bucket out

it is a great base, I have tweaked it over the years with great results....

the white glaze (which is allover coverage) is this base glaze w/o colorants  matte white...its not too noticeable, but the spray also shined up the white

the base plus 1/2 % cobalt oxide is a matte periwinkle blue

Comment by Jan Wallace on March 16, 2012 at 2:09am

Donna,  Did you add any copper or colourant to the spray mixture? Or, is this green totally a result of the stront, lithium and water mix that you sprayed on? Also, what glaze did you spray over as this obviously plays a part in the end result? Thanks. Jan

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