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Rauri Tyler
  • Male
  • Salt Lake City, UT
  • United States
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If you're an artist, what kind of art do you make?
I am...
I have been creating pottery for several years. I am mostly self taught. I took a few classes at a local Art School and since have been exploring every facet of pottery I can learn about. I am now a full time potter. I have spent a good deal of time on sculptural, functional, and rakuware. Even constructing my own custom Raku kiln. I formulate all my own glazes and even a few clays. For the last year or so I have found Crystalline pottery fasinating. I have read every book I could find on the subject and spent countless nights researching Crystalline Glazes on the internet. After many, many failures, and dozens of pots going straight in the garbage I have finally got a good grasp on the chemistry of the glazes. I Think Crystalline glazes suit me perfectly. They are extreamly challenging and the seamingly endless possibility of colors and crystal types fits my personality perfectly. It seems there is always more to learn and experiment with. If you enjoy my work visit my website rauritylerpottery.com.
About my artwork
Crystalline is a special effects glaze made primarily of particles of zinc oxide and silica. These two ingredients, along with others, are mixed with water and applied to the piece with a brush in several coats. Because the crystalline glaze is extremely runny at peak temperatures, a clay pedestal and glaze catch dish is made for each vase. As the glaze is flowing down the vase, the catch dish collects the excess glaze and prevents it from running onto and ruining the kiln shelves. While at peak temperature (around 2200 degrees F), a chemical reaction takes place between the zinc oxide and the silica forming seed crystals from which the crystal will eventually mature. After the chemical reaction is stimulated, the kiln is cooled 200 degrees below the peak temperature. The temperature is then held for 5 hours to allow the crystals to grow to the desired size. This is called the soak cycle. Once this cycle is completed, the kiln is turned off, and the crystal growth period is complete. Many times I must refire pots several times to achive a satisfactory result.

The crystalline glaze is white in color. Metallic pigments such as manganese dioxide, iron oxide, nickel oxide, cobalt carbonate, or copper carbonate as well as others, are added to create the wide color spectrum of the crystalline glaze. Once the kiln has cooled to room temperature, the vases and attached catch dishes are removed from the kiln. The next step in the process is removing the clay pedestals, which are still attached to the bottom of each vase. This is done by gently tapping the pedestal off using a mallet. The bottom of each vase must then be ground down in order to remove any excess glaze.
Pottery, Photography, Outdoor Sports
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At 10:37 on April 28, 2011, Rossello Damiano said…


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