Down to Earth Pottery Posted January 4, 2019 Report Share Posted January 4, 2019 Link to comment Share on other sites More sharing options...
hitchmss Posted January 4, 2019 Report Share Posted January 4, 2019 Not easy to do without completely redesigning the glaze. I approach this of course with more of a focus on making a food safe/stable glaze If you are making purely decorative objects I would try decreasing out your fluxes/feldpars in 5% increments, and increasing your silica in likewise 5% increments. Less flux and more glass will mean a more underfired glaze, which will give you a matte surface, but it may have a slew of other issues. You can also try increasing you clay content in maybe 2-4% increments. Try tests out to +/- 20%; this will give you 4 or more tests which should provide you the "matteness" you want. It would be much better and easier to find a stable matte glaze recipe for the cone you are firing to, and adding colorants to achieve the look you want. Tony Hansen has some great recipes for Matte glazes which dont cutlery mark, or craze....hard to do in a matte glaze. Link to comment Share on other sites More sharing options...
Min Posted January 4, 2019 Report Share Posted January 4, 2019 @Down to Earth Pottery, would you elaborate on what it is you are looking for? Do you use commercial glazes or make your own, functional glaze or for decorative use only or any other info you can add. Welcome to the forum, if you have any problems with posting questions please feel free to message me or any of the other Moderators, there is a little envelope symbol at the top right corner of the page to do that with. Link to comment Share on other sites More sharing options...
kristinanoel Posted January 4, 2019 Report Share Posted January 4, 2019 Take a look at this FANTASTIC video about adjusting glazes from NCECA 2017, Steve Loucks dropping knowledge. I've watched it multiple times and it's fascinating and incredibly helpful. Link to comment Share on other sites More sharing options...
tinbucket Posted January 5, 2019 Report Share Posted January 5, 2019 Can you give us some more information? Cone? Color? Recipe? Here are some ways to make a glaze matte: Increase alumina, decrease silica, add calcium, add magnesium Link to comment Share on other sites More sharing options...
Bill Kielb Posted January 6, 2019 Report Share Posted January 6, 2019 My best thought is to learn basic Stull and UMF. You can go to Glazy and find recipes that may fit your need and use or modify them as necessary. Adjusting glazes is really fairly easy especially for texture as long as you develop a true matte as opposed to an underfired glaze that appears matte. we have started to do simple beginning glaze basics for our studio members and for those new to clay. You may find this interesting. Our hopes are to expand upon the very basics of this over time so those interested can solve these issues for themselves. finally there are many mattes on glazy, one of them is Marcias Silky True matte and we have already sequenced that from dry to glossy by adding silica. The glaze has a durable flux ratio and was developed for low COE porcelain but works well in the studio on stoneware and Bmix as well. glazy picture attached as well please try not to use comet cleanser in your glaze - just my opinion though. Link to comment Share on other sites More sharing options...
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