Meanwhile, back at camp, my experiments with fusing glass and clay continues.
This was the start of the project;
black clay and blue mosaic glass tiles
Which I fired at 1020 C with a 30 minute soak
the glass didn’t fill the whole intended lake area; besides air bubbles were formed
So I added more glass tessarae and I painted the bowl with a blue Botz glaze.
The kiln was fired at 1050 C with an hour’s soak. The clay has now turned proper black…I didn’t glaze the outside of the bowl, it is still matte and rough to the touch. I think it gives a nice contrast to the shiny and smooth inside.
…and there is a proper little lake at the bottom of the bowl, as intended. But. I wonder.
The search for perfection may carry on for a little while, yet. The glass still looks lumpy.
I’m sorry about the quality of the photos; it is quite a dark day so I had to use a flash.
Annakeiller's Blog 
Isn’t it frustrating trying to get something to work… looking promising, though 🙂 I’ve never used these glass tiles – just wine and sherry bottles and random bits from jumble sales. They melt all right at stoneware temperatures, but they craze like mad as they cool.
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yes, the cooling should take place as slowly as possible! The crazing isn’t too bad with my tiles; but with your bottles does it reach a point where the glass creates sharp edges that cut your fingers as you touch? I might try the wine bottle trick; got plenty! Hic!
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