How to Use Magma

Developed to create a rough, cratered surface.

Mayco’s Stoneware Magma glazes have a dry and cratered finish that expands during the firing to create a textured and dimensional surface. We have a dark and a light Magma available. As with all of our Stoneware Glazes, our texture glazes work well on a variety of clay bodies and have a firing range from cone 5 to cone 10.

Stoneware Specialty Specialty Tip Sheet

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Application Tips

  • Shake and stir well.
  • For shown chip results, apply directly to bisqueware.
  • Apply 2-3 coats. Allow glaze to semi-dry between coats.
  • The thicker the application, the more textured the surface will be. A thicker application can be achieved by blotting or dotting the glaze onto the piece.  *See photo below.
  • Light Magma does not crater as much as the Dark Magma. We suggest using up to 5 coats to increase Light Magma texture.
  • Can be applied with slip trailer.
  • Due to the surface texture, we recommend that these glazes only be used on decorative surfaces. You may experience slight crumbling.
  • Black Magma will fume to other pieces in the kiln. We suggest using a soft brick in between pieces or use on its own kiln shelf.
  • Magmas can be used in combination with other Stoneware glazes to achieve different textures and effects. We recommend testing prior to use.

Firing Range & Clay Bodies

  • Cone 6 White Clay
  • Cone 6 Speckled Clay
  • Cone 6 Dark Brown Clay
  • Cone 10 White Clay
  • Cone 6 White Clay
  • Cone 6 Speckled Clay
  • Cone 6 Dark Brown Clay
  • Cone 10 White Clay
Glaze will perform differently based on clay bodies and firing temperature used. The choice of clay body, thickness of glaze application, firing process and temperature will affect the fired results. Always test in your kiln and on your clay body.
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