Glossary of Terms - R

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  • Red Iron Oxide

    Red Iron Oxide

    Coloring Oxide used for a variety of colors. By itself it gives a strong dark red-brown.



  • Refractory

    Refractory

    Ceramic materials which have very high melting points and are resistant to heat, even after being fired many times. Kiln bricks and furniture are refractory materials.



  • Rib

    Rib

    Wide tool used for smoothing, texturing, or shaping clay.



  • Ribbing the outside

    Ribbing the outside

    When throwing on a wheel, using a rib tool on the outside of a pot to refine the shape.



  • Rutile

    Rutile

    Rutile is an oxide used for coloring glazes and for washes. As a wash it gives warm yellows. Rutile is made up of both iron and titanium.