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Stain 6020

Notes

This is a high melting stain.
It does not fuse well in glazes, and requires a lot of flux.
It works very well in porcelain bodies.

Related Information

Mason stains in the G2934 matte base glaze at cone 6

Glazed porcelain tiles showing the range of color possible with stains

Stains can work surprisingly well in matte base glazes (provided they are not too matte). Stains perform differently in a matte host glaze. The glass is less transparent and so varying thickness do not produce as much variation is tint. Notice how low many of the stain percentages are: yet most of the colors are still bright. A good reason to minimize stain concentration is to avoid leaching. We tested 6600, 6350, 6300, 6021 and 6404 overnight in lemon juice, they passed without any visible changes. It is known that MgO mattes, like this one, are less prone to acid attack that CaO mattes. A down-side to this matte mechanism is that chrome-tin stains do not work (e.g. 6006), this is because this does not have the high CaO content needed in the host glaze to develop the color. The inclusion stains 6021 and 6027 work very well in this base. As do the 6450 yellow and 6364 blue. And the 6600 produces an incredible gunmetal black. The 6385 is an error, it should be purple (that being said, do not use it, it is ugly in this base).

Links

Oxide Analysis Formula
Materials Stain
Suppliers Mason Color Works Inc
Typecodes Colorant
Metallic based materials that impart fired color to glazes and bodies.

By Tony Hansen


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