TS Studio Posted September 18, 2015 Report Share Posted September 18, 2015 I'm also interested in your best food safe black satin matte recipes for cone 6. Something not brown from iron, not metallic. I'm open to using stains. Link to comment Share on other sites More sharing options...
Joseph Fireborn Posted September 18, 2015 Report Share Posted September 18, 2015 Anything that is going to be dinnerware safe at cone 6 and have a satin/matte surface is not going to be as easy as a simple recipe. Your going to have to test numerous firing schedules and slight changes in chemistry to get a surface that is scratch resistant. There a tons of satin/matte black recipes at cone 6, just start trying them and you will see how hard it is to get one that doesn't mark with a butterknife. Here is where I would start : http://digitalfire.com/4sight/education/g1214z_cone_6_matte_base_glaze_122.html Add some % stain of your choosing and start testing schedules. Link to comment Share on other sites More sharing options...
neilestrick Posted September 18, 2015 Report Share Posted September 18, 2015 Take a satin glaze and start testing. Something like 10% Red Iron Oxide and 1% Cobalt Carbonate is a good place to start. Look for magnesium glazes for durability. Link to comment Share on other sites More sharing options...
Min Posted September 19, 2015 Report Share Posted September 19, 2015 I've been testing a ^6 dolomite matte blended with a clear glaze to fine tune the amount of matteness I can get away with and still have a glaze that doesn't cutlery mark. For different colours the amount of clear needed really varies as the stains, opacifiers and colouring oxides make a difference to the melt. For black I have had success with a 50/50 blend of dolomite matte with my low coe clear plus 6% Mason 6600. It has survived vinegar testing but I haven't had it lab tested. ^6 Dolomite Matte G2934 3124 17.4 EPK 18.3 Dolomite 23.5 Silica 26.9 Calcined Kaolin 13.9 100 http://digitalfire.com/4sight/recipes/plainsman_cone_6_dolomite_matte_base_121.html?logout=yes Link to comment Share on other sites More sharing options...
Marcia Selsor Posted September 19, 2015 Report Share Posted September 19, 2015 Ron Roy's Licorice from Hesselberth and Roy's Mastering Cone 6 Glazes is a very beautiful satin matt. Marcia Link to comment Share on other sites More sharing options...
Chantay Posted September 20, 2015 Report Share Posted September 20, 2015 I have a glaze from Laguna that is Matte. I hate it on food surfaces, makes it very hard to clean sticky stuff. Of course customers like it. Link to comment Share on other sites More sharing options...
oldlady Posted September 22, 2015 Report Share Posted September 22, 2015 if you do get a matte glaze, do not use it on interiors that are expected to hold water unless you test it for at least 24 hours. put the pot on a paper towel or napkin and leave it alone for as long as you can, minimum 24 hours. then scrape it with a fork or spoon and test it again. bet it leaks. Link to comment Share on other sites More sharing options...
Min Posted September 22, 2015 Report Share Posted September 22, 2015 if you do get a matte glaze, do not use it on interiors that are expected to hold water unless you test it for at least 24 hours. put the pot on a paper towel or napkin and leave it alone for as long as you can, minimum 24 hours. then scrape it with a fork or spoon and test it again. bet it leaks. Unless it's earthenware shouldn't the pot be water tight even without a glaze, matte or glossy? Link to comment Share on other sites More sharing options...
TS Studio Posted September 22, 2015 Author Report Share Posted September 22, 2015 This is one I liked the sound of, glad to hear it's getting hopeful results. How did you decide on the clear, Min? I have a noncrazing clear I like, I figured I'd use that. I've been testing a ^6 dolomite matte blended with a clear glaze to fine tune the amount of matteness I can get away with and still have a glaze that doesn't cutlery mark. For different colours the amount of clear needed really varies as the stains, opacifiers and colouring oxides make a difference to the melt. For black I have had success with a 50/50 blend of dolomite matte with my low coe clear plus 6% Mason 6600. It has survived vinegar testing but I haven't had it lab tested. ^6 Dolomite Matte G2934 3124 17.4 EPK 18.3 Dolomite 23.5 Silica 26.9 Calcined Kaolin 13.9 100 http://digitalfire.com/4sight/recipes/plainsman_cone_6_dolomite_matte_base_121.html?logout=yes Link to comment Share on other sites More sharing options...
TS Studio Posted September 22, 2015 Author Report Share Posted September 22, 2015 I'm not looking for a true Matte but thanks. Right now, I'm only interested in Satin Matte. I have a glaze from Laguna that is Matte. I hate it on food surfaces, makes it very hard to clean sticky stuff. Of course customers like it. Link to comment Share on other sites More sharing options...
claygram Posted September 22, 2015 Report Share Posted September 22, 2015 Charcoal Satin Matte provided by Toni Smith Wollastonite 23.2 frit 3124 31.0 epk 31.7 silica 14.1 total 100 add dark rutile 6.0 add mason stain 6600 10.0 best luck Link to comment Share on other sites More sharing options...
Min Posted September 22, 2015 Report Share Posted September 22, 2015 This is one I liked the sound of, glad to hear it's getting hopeful results. How did you decide on the clear, Min? I have a noncrazing clear I like, I figured I'd use that. I use a clay that needs a low coe glaze and I wanted to have some magnesium in the recipe so I used G1215U. I'm going to test it with my version of that glaze, without the 3249 frit as that is so expensive and hard for me to get where I live. G1215U EPK 14 Silica 26 Wollastonite 14.5 Minspar 24 Frit 3249 20 98.5 g1215u sub Silica 34.50 Wollastonite 5.00 EP Kaolin 23.00 Nepheline Syenite 2.90 Minspar 12.00 Gerstley Borate 22.00 Talc 3.00 Dolomite 3.00 105.40 The G1215U is very clear when used as is, my version is a titch yellowish so not suitable to use as a clear on white claybodies but I use it with oxides and stains in other glazes. I like the idea of being able to adjust the level of mattness of a glaze so the idea of blending the matte with the clear seemed logical. Link to comment Share on other sites More sharing options...
Chantay Posted September 22, 2015 Report Share Posted September 22, 2015 Min, I glazed the inside of a vase that ended up crazing. Even though it was fired to the correct cone it leaked The glaze wasn't suppose to craze, I had put it on to thick. Link to comment Share on other sites More sharing options...
oldlady Posted September 22, 2015 Report Share Posted September 22, 2015 min, part of the problem with black matte glazes is that you cannot really see the crazing that sometimes happens. the glaze recipe has been developed by and fired by a person who works one way, the average user probably will not be using the exact same way of working with the exact same kind of kiln using the exact same firing rate and the exact same clay as the person who developed the recipe. the odds are in my favor in any bet i make that the pot will leak. Link to comment Share on other sites More sharing options...
Min Posted September 22, 2015 Report Share Posted September 22, 2015 Chantal and OldLady, yup, that was my point. Functional pots shouldn't leak, glazed or not. (except lowfire) Re black glaze, I had an email conversation with Ron Roy and he spoke of being able to see crazing on one of his black glazes when he had a bowl filled with mashed potatoes and the steam from them highlighted the crazed glaze. Link to comment Share on other sites More sharing options...
Joseph Fireborn Posted January 23, 2016 Report Share Posted January 23, 2016 This is one I liked the sound of, glad to hear it's getting hopeful results. How did you decide on the clear, Min? I have a noncrazing clear I like, I figured I'd use that. I use a clay that needs a low coe glaze and I wanted to have some magnesium in the recipe so I used G1215U. I'm going to test it with my version of that glaze, without the 3249 frit as that is so expensive and hard for me to get where I live. G1215U EPK 14 Silica 26 Wollastonite 14.5 Minspar 24 Frit 3249 20 98.5 g1215u sub Silica 34.50 Wollastonite 5.00 EP Kaolin 23.00 Nepheline Syenite 2.90 Minspar 12.00 Gerstley Borate 22.00 Talc 3.00 Dolomite 3.00 105.40 The G1215U is very clear when used as is, my version is a titch yellowish so not suitable to use as a clear on white claybodies but I use it with oxides and stains in other glazes. I like the idea of being able to adjust the level of mattness of a glaze so the idea of blending the matte with the clear seemed logical. This looks beautiful and in your firing schedule its cutlery mark resistant? Do you slow cool or is this with a natural cooling? Link to comment Share on other sites More sharing options...
Min Posted January 23, 2016 Report Share Posted January 23, 2016 This looks beautiful and in your firing schedule its cutlery mark resistant? Do you slow cool or is this with a natural cooling? If I really try and scrape it with way more force than you would use cutlery with then I can get a faint mark but for all intents and purposes I would say no to cutlery marking. I did up the amount of clear slightly from when I posted the original test piece. I'm using 55 grams of clear plus 50 grams of dolomite matte plus 7 grams of best black stain. Definite sort of to your slow cool question. I only use my front loader when firing this glaze and it has 5 1/2" walls so it cools very slowly. I haven't had to add a slow cool ramp down, haven't fired it in the other kilns since it works as is in the front loader, sorry can't really answer that question. It's a lovely silky feeling glaze, much like the ^10 dolomite mattes. It makes a really nice white with tin. Link to comment Share on other sites More sharing options...
Joseph Fireborn Posted January 23, 2016 Report Share Posted January 23, 2016 Thanks Min! I am going to try this and another digital fire recipe. I want to create sort of a charcoal satin matte for some plates I am working on. This will be where I start. I appreciate the feedback. Link to comment Share on other sites More sharing options...
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