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| Glass and copper layers - bottom layer is blue streaker glass, then a narrow strip of heavy copper foil and topped with clear glass. |
This is the second of several trials investigating metals in and with glass. As in the last experiment, the copper began as a metallic rusty-golden color and after firing became burgundy-red IF the copper is covered by glass.
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| Three layer glass/copper/glass stack from above after kiln firing. |
In the close up below, it is possible to see the bubbles around the edges of the copper. There seems to be a pattern when copper is sandwiched between two pieces of any kind of glass. There are bubbles that appear to have something to do with the firing and/or oxidizing process. More examples of this pattern will follow.
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| Close up of glass, narrow copper strip and clear glass topper after kiln firing. |
Notice below the pattern in the burgundy strip. On the left it appears as though a layer on the top of the copper has oxidized in a way that has raised the surface.
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| Copper strip after kiln firing. |
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