A lot of you in the last blog post had questions and wanted recipes so I thought rather than try answering all of them one by one I would try answering here. Above is a test tile for the selsor base oribe, it worked very nicely, lots of red flashing pretty stable
This is Woo Yellow, it was a beautiful satin matte very stable
St. Johns Black, if you want a gun metal black this is a great glaze at ^6 and ^10
VC Matte yellow, VC matte can run like a mother but it is a very pretty, not a functional glaze, use on outside with a liner glaze, sort of a stone feel, good sculpture possibilities
Marks Temmoku looked the same at ^6 as it does at ^10, this was applied a bit too thick though
Laura's Turquoise, I have used this in ^6 oxidation not as pretty as it is here. Sort of bright, but I like the feel of it, very satin matte, very stable, breaks nicely if you do a lot of carving
This was a recipe I found for a ^6 amber celedon that said ^6/7 and I think it is more on the 7 side. The inside of the bowl below shows a true amber celedon, really pretty, but it didn't all melt. Although I sort of like this look and it feels nice, not rough at all. Sort of has an ash glaze look to it.
Most of these glazes I have used in ^10 reduction and am familiar with what they do. Many of the glazes we tested were Barbara's standard ^10 glazes and we didn't alter them. You can find most of them in the John Britt high fire glaze book. I mixed up some Selsor base and added colorants and Barbara mixed up a few of the John Britt glazes like the Cherry Blossom and the buttery rust. We had much better success with her ^10 glazes, especially the Dresang Shino and the Carbon Trap shino. Here are a few recipes, but if you are really into this and want to do some testing send me an email and I will see if I can help you with at least what I have learned so far!
I think part of it is looking at the neph sy content and I am wondering if swapping out the custer feldspar for something else would melt the celedon sooner, I may try this with neph sy and see what happens. I noticed that the turquoise and the celedon both have the custer and both have a very similar feel to them. Would the turquoise get more glossy, that might be really Walmart looking, ick...... So there you have it, you know what I know, email if I can help!
Amber Celadon cone 6/7 reduction
35.0 Alberta Slip
21.4 Custer Feldspar
2.9 Magnesium Carbonate
2.9 Gerstley Borate
Add: 8.7 Yellow Ochre
( I think this wants to be a cone 7, and I believe it would look as nice as a ^10 amber celedon)
Cone 6 Reduction
56.25 Nepheline Syenite
12.50 Gerstley Borate
this is a nice stable clear glaze although it showed a lot of crazing, I like crazing, this had an old chinese celedon look to it and it flashed pink in places, really nice.
Laura, I tried it over the white crackle slip from Keith Phillips and it did nothing..... can't get that slip to work for me at all.
for oribe add copper carb 3.5%
for blue add rutile 5%
for a nice gray add nickel oxide and rutile (sorry I forgot the amounts, something like 1.5%)
don't even bother with the copper red, it is very muddy and ugly but if you don't want to listen to me and try for better results than I got here it is: tin oxide 1.5% copper carb .5% RIO .10%
I did notice that where it was really thick it looked like it might want to be nice, but mostly it has sucked for me both times I tried it
Liz asked for cherry blossom but I really don't like this glaze, it's fussy and it flaked off the brownstone. I used it at the workshop in Wilmington on Raku clay, it didn't flake off, but I didn't like it. This recipe looks nothing like the recipe Ronan has in his photos, it's just a rust/brown with a tiny bit of irredecsence that looks cheap to me. I did like it over VC matte which one guy did in the Wilmington workshop, very nice, but huge potential for running with that VC, use it really really thin.
neph sy 40
Soda Ash 10
add 2% rio for irridescent shino (sort of, but this is not the shino we all know and love)
22.94 Custer Feldspar
2.98 Copper Carbonate
.23 Cobalt Carbonate