Hoping to fix the crack I just saw
Posted: Thu Dec 26, 2013 5:28 pm
Hello every body, and very happy holidays to all of you.
I tried to fuse together a mesh melt which I recently made to a strip fused sheet
I made.
The strip sheet has an uneven textured face, which I like a lot, therefore I put the melt under the sheet, and also covered the sheet with a blanket, in order to have lower temp. at the top of the piece and higher temp. at the bottom. This is fired in a deep kiln , i.e. there are electrical elements under the piece, also I use dysson shelf which allows the air at the bottom circulate a lot.
I opened the kiln at 125.6 F , and saw a crack going from the melt underneath towards outside the piece. I do not know if it is a compatibility problem or an annealing problem. But the crack is in the upper sheet of glass, not in the melt itself.
It might be compatibility, as in the melt I have BE 1442 - Neo Lavender shift. This color, [which I love] gave me already problems in the past, where is was clearly compatibility problem . At that time, when I made the melt, I fired at 1700F, which is much higher that what I did now.
Anyhow, I decided to refire , hoping to fix the crack. A much more conservative schedule of course.
Considering that it is now Thursday night in Israel, I think I wo'nt be seeing the piece only on Saturday morning. A long firing.
Has anybody any comment on this?
Have you incurred such a problem in the past? or similar?
I apologize for not writing the whole schedule, as it is in Centigrade, and I am too tired to translate it to Fahrenheit.
Many thanks,
Havi
I tried to fuse together a mesh melt which I recently made to a strip fused sheet
I made.
The strip sheet has an uneven textured face, which I like a lot, therefore I put the melt under the sheet, and also covered the sheet with a blanket, in order to have lower temp. at the top of the piece and higher temp. at the bottom. This is fired in a deep kiln , i.e. there are electrical elements under the piece, also I use dysson shelf which allows the air at the bottom circulate a lot.
I opened the kiln at 125.6 F , and saw a crack going from the melt underneath towards outside the piece. I do not know if it is a compatibility problem or an annealing problem. But the crack is in the upper sheet of glass, not in the melt itself.
It might be compatibility, as in the melt I have BE 1442 - Neo Lavender shift. This color, [which I love] gave me already problems in the past, where is was clearly compatibility problem . At that time, when I made the melt, I fired at 1700F, which is much higher that what I did now.
Anyhow, I decided to refire , hoping to fix the crack. A much more conservative schedule of course.
Considering that it is now Thursday night in Israel, I think I wo'nt be seeing the piece only on Saturday morning. A long firing.
Has anybody any comment on this?
Have you incurred such a problem in the past? or similar?
I apologize for not writing the whole schedule, as it is in Centigrade, and I am too tired to translate it to Fahrenheit.
Many thanks,
Havi