Dealing with Many Bubbles--after the fact
Posted: Wed Nov 26, 2003 3:17 pm
Any idea of how to save these pieces? Two large pieces, both fired at the same time, and both had the same result--fifty or so triangular and irregular, bubbles 1/4 to 1/2" spread throughout the surface. between the layers.
Here are the factors: both were already two layers fused fairly flat, both about 14" square. As usual, I added a top layer for a second fusing. But I'm using a different kiln and haven't got the bugs out. There MAY have been a tiny bit of moisture left on the top layers. Also, there MAY have been a small leak in one side of the kiln (large 30x60" interior, top elements). Firing schedule was 65 degrees to 1250 over 3hr15min, soak 15min, 30 min to 1410, soak ten, 10 min to 960, soak 1 hr, 2hr45min to 700 and off. (I'm not able to open kiln during firing)
But the real question is, what can I do now???? Can I save these pieces? I know what to do next time, but what can I do this time? These are table-tops, and must be flat. Thanks, y'all, Carolyn
Here are the factors: both were already two layers fused fairly flat, both about 14" square. As usual, I added a top layer for a second fusing. But I'm using a different kiln and haven't got the bugs out. There MAY have been a tiny bit of moisture left on the top layers. Also, there MAY have been a small leak in one side of the kiln (large 30x60" interior, top elements). Firing schedule was 65 degrees to 1250 over 3hr15min, soak 15min, 30 min to 1410, soak ten, 10 min to 960, soak 1 hr, 2hr45min to 700 and off. (I'm not able to open kiln during firing)
But the real question is, what can I do now???? Can I save these pieces? I know what to do next time, but what can I do this time? These are table-tops, and must be flat. Thanks, y'all, Carolyn