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Pottery Tips and TechniquesMatt Slip DecorationSlips should be applied to leatherhard pottery or ceramics. |
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Obtaining Satin Matt Surfaces Using Slips Slips should be applied to leatherhard pottery or ceramics. They can be applied by brush, dipped, sprayed or slip trailed on. Because the same clay forms the base of the slip you are applying and we have added a deflocculant, which is sodium silicate, generally you should get a good fit. Any added oxides will help to flux the clay and possibly develop a low, satin mat sheen. By using slips, a great many methods of decoration are possible, such as using wax resist or sgraffito, which is scratching back into the slip to reveal the uncolored clay beneath. A veneer can also be applied to the whole pieces, giving the impression of a colored clay body. Using the slip method of decorating, it is possible to once fire your work, provided you don't intend to use any glazes. Otherwise, bisque normally and proceed to add glazes as you wish! Firing can also be undertaken in any manner -- in an electirc kiln, gas kiln or a woodfired kiln. Low temperature firing techniques such as pit firing or raku are probably less suitable, because the slip would not contain enough flux to melt suffiently. You could experiment with adding low temperature fluxes, such as lead frits. Coloring slips is similar to coloring engobes. Use the chart below to get an idea of what percentages of oxides to use to get the desired effect. Stains may also be used, but you would have to experiment with amounts or get the information from the manufacturer. Where available carbonates can be used in place of the oxides listed below. These are a bit finer than the oxides, but a slightly larger amount, try 10 %, is generally needed to get a similar color density. Ball milling, especially if you are using oxides, will greatly help in reducing speckles and obtaining a uniform color density. Colorant Color Amount (%)
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Patriotic and Christian
Gifts, Russ Berrie,
Teddy Bears
from the Past Collection. Wonder mugs (Amazing how the colors change when adding hot liquid). Winter Hat and Scarf Sets, fleece warm and cozy. Holy Bears inspirational bears with a message for every occasion. Neckties of Silk by Eagle Wings, 100% Silk, with Patriotic and Christian Designs. Travel Blankets the perfect take-along for any outdoor activity. Outback Hats available in all canvas or canvas with navy under brim. |
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