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Help with functional satin base glaze


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I'm new to making my own glaze and am on the hunt for a functional satin glaze (originally thought I could build my own, but I might save that till a little farther down the road). 

I have John Britt's book and was thinking of trying V.C. 71 Satin Matte, but reading online has lead me to believe this glaze is not matured at cone 6.

G2934Y from Digitalfire (https://digitalfire.com/4sight/recipes/cone_6_magnesia_matte_low_loi_version_135.html) seems like it could fit the bill, as well as G1214Z (https://digitalfire.com/4sight/recipes/cone_6_silky_matte_3.html), but I've found some people with issues on G2934Y (not well balanced) and didn't see much on G1214Z).

Also looking at https://glazy.org/recipes/25161 from Matt Little (the photo is exactly what I want to achieve).

My end color will be white and was thinking of using Zircopax to get that.

Sorry for the unproductive question, but I've spent hours on what I've thought would be an easy thing to find. Just when I think I've found what I'm looking for, I find other information saying there are large issues with that recipe. 

Can anyone recommend a satin base for functional pieces? Has anyone used the above recipes with success? Using an electric kiln to cone 6. Free-fall cooling (older cone-sitter kiln). 

Thanks for any help in this! 

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1 hour ago, milksnake12 said:

I'm new to making my own glaze and am on the hunt for a functional satin glaze (originally thought I could build my own, but I might save that till a little farther down the road). 

I have John Britt's book and was thinking of trying V.C. 71 Satin Matte, but reading online has lead me to believe this glaze is not matured at cone 6.

G2934Y from Digitalfire (https://digitalfire.com/4sight/recipes/cone_6_magnesia_matte_low_loi_version_135.html) seems like it could fit the bill, as well as G1214Z (https://digitalfire.com/4sight/recipes/cone_6_silky_matte_3.html), but I've found some people with issues on G2934Y (not well balanced) and didn't see much on G1214Z).

Also looking at https://glazy.org/recipes/25161 from Matt Little (the photo is exactly what I want to achieve).

My end color will be white and was thinking of using Zircopax to get that.

Sorry for the unproductive question, but I've spent hours on what I've thought would be an easy thing to find. Just when I think I've found what I'm looking for, I find other information saying there are large issues with that recipe. 

Can anyone recommend a satin base for functional pieces? Has anyone used the above recipes with success? Using an electric kiln to cone 6. Free-fall cooling (older cone-sitter kiln). 

Thanks for any help in this! 

You can try the one below. It was created to be durable and still melt over heavy underglaze. Have used it for over a year in a studio environment  and am happy with it.  We look for a durable R2O and the fired results match the si:al ratio for a matte (Prox. 5:1 or less) and then fired progressively to tell it’s a true matte. This glaze has been tested from cone 5-7, it is a matte, no slow cooling required. Having said all that, glazes must fit your clay and often  don’t always travel well. There are many theories in what is a good glaze, testing with your clay and your firing is really always necessary.

To make this recipe less matte addd silica until  your desired sheen is achieved. 

Best indicator by composition of gloss level I know of for true mattes is a Si:Al ratio of approximately 5 or less

Best indication for likely durability is R2O between 0.2 - 0.3

Test firing always necessary

https://glazy.org/recipes/19734

Edited by Bill Kielb
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Have you a decent clear glaze? My clear glaze crazed but I did this any way and got a very nice base glaze, that does not craze, to add colorants.

Do a line blend between the clear and the G2934 Dolomite Glaze. 20/80, 70/30, 60/40, 40/60, 30/70, 80/20. You will find a a nice satin glaze somewhere in the line blend.

I added 12% zircopax to get a white liner glaze. The liner is 60% clear and 40% Dolomite Matte. I have added 5% Black stain to get a light grey, 2% robin's egg stain to get a nice light blue.

I use the G1214Z Silky Matte with the 6% rutile, 3% copper carb and 1.5% cobalt carb to get a medium blue glaze - this glaze is used a lot. The 6% rutile and 6% rio gave me a nice caramel color.

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13 minutes ago, Bill Kielb said:

You can try the one below. It was created to be durable and still melt over heavy underglaze. Have used it for over a year in a studio environment for over and am happy with it.  We look for a durable RO and the fired results match the si:al ratio for a matte (Prox. 5:1 or less) and then fired progressively to tell it’s a true matte. This glaze has been tested from cone 5-7, it is a matte, no slow cooling required. Having said all that, glazes must fit your clay and often  don’t always travel well. There are many theories in what is a good glaze, testing with your clay and your firing is really always necessary.

To make this recipe less matte addd silica until  your desired sheen is achieved. 

Best indicator by composition of gloss level I know of for true mattes is a Si:Al ratio of approximately 5 or less

Best indication for likely durability is R2O between 0.2 - 0.3

Test firing always necessary

Just when I got excited no glaze"below Bill.

 

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  • 3 weeks later...

I tried VC 71 on multiple clay bodies and it crazed on every one. I like the look of Marcia's matte, and how color still comes through. 

I have been using this recipe for about 4-5 years now on B Mix 5. I paint with underglazes and mason stains and I want a glaze that I can see through but has a nice feel in my hands. Some mason stains require a high calcium content for color development, so this works. My kiln is also a manual kiln sitter controlled, but it is 10 cubic feet, which may slow down the cooling a bit. I adjusted this Dixon Satin glaze by adding silica, so if you want it as matte as it was originally, reduce silica. (I think I added about 900 g) 

Silica                                    27.17

Nepheline syenite       21.41

Whiting                             21.12

EPK                                     19.18

Ferro frit 3124                8.34

Gerstley borate              2.78

 

4 mugs.jpg

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