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Pottery and Ceramics GlazeWhat are Over Glazes?The term over glaze refers to the group of special low-fire products that are applied to an already fired glaze surface. During an over glaze firing, the underlying glaze is softened enough to allow the over glaze to sink into and become a permanent part of its surface. Your choice of the underlying glaze will determine the finish of your over glaze: a satin or matte glaze surface will yield a soft matte over glaze finish while a gloss glaze will yield a bright shiny over glaze finish. The color of the underlying glaze will also affect the final over glaze color, experiment with various glazes and luster combinations to create custom colors. |
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PreparationCleaned green ware that is to be over glazed should be bisque fired to at least Cone 04, then glaze fired to the highest recommended temperature of the underlying glaze being used, for instance a glaze labeled Cone 06-05 should be fired to Cone 05. This is to insure that all burnout is complete in both the clay and glaze prior to over glaze firing.When applying over glazes it is critical that both the object and work area be clean and dry. Any contamination by dust or moisture will interfere with the over glaze application resulting in defects. Clean the glaze surface with alcohol. If using alcohol, allow ample drying time because alcohol contains water which must be dried completely before over glaze application begins. General ApplicationUse a clean, dry, high quality, soft-bristled brush. Choose the largest size reasonable for the object being decorated. Saturate the bristles with over glaze, but do not dip past the metal band on the brush, and work out the excess over glaze. Use firm, even strokes one next to the other. Apply as evenly as possible, but do not over brush. Even application is the rule for all metallics and luster's except Mother of Pearl, Opal and Aurora. Allow pieces to dry completely in an area free from dust, dirt, smoke and moisture before firing.Firing GuidelinesVentilation is the key to producing vivid over glaze colors. Kiln vent systems may not be capable of handling the heavy fumes produced during over glaze firing, you will need to experiment with your own system to determine its suitability. The firing guidelines that follow use open kiln lids and spy holes for ventilation.Set Kiln On Low, Lid Fully Open, Spy Plugs Out, Time: 45 Mins.
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Metalic Lusters Copper |
 Bright Platinum |
Specialty Gold Glass Gold |
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 Mother Of Pearl |
Lusters |
 Opal |
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All About Clay The best way of starting out is to take a few lessons. You will probably waste quite a bit in materials when you first get started. Figuring out how to truly make handmade pottery correctly and shape into what you want it to be can be quite an ordeal. The different tools that a normal shop will have can be fun to try. You will soon see which ones you like to use the most and then when you are ready you will know which ones to buy. With the help of the internet, you can now purchase most if not all of your ceramic and pottery tools and supplies online. We are located far from any well supplied dealers and yet working with reliable ceramic and pottery suppliers online has allowed us to recieve most of our orders within a timely manner. When you get all set up, just enjoy the hobby and have fun at it. Some people get pretty serious and start selling their creations at craft fairs and small stores, but others just like to create items for themselves, relatives, and friends. Whichever kind of handmade pottery you desire to endeavor, enjoy the hobby and have fun doing it.
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