It is well-known in kiln forming circles that float glass is
inclined to devitrify with long, slow or repeated firings. I decided to try to take advantage of this
for a panel.
I shingled the strips of float and fired them at 835C for 10
minutes. I expected a striped result
with devitrified surfaces alternating with clear cut edges.
I didn’t get it, though.
Instead there were areas of mild devitrification, but no strong bands.
 |
| top, general view |
 |
| View of the top ends of the strips |
 |
| General view of the bottom |
 |
| Detail view of the bottom ends of the strips |
There was some evidence of devitrification at the ends of
the strips where points were formed.
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| Some pointed ends showing devitrification |
Even when viewed in detail, there is little evidence of
devitrification. I continued, to do a
slump, but even then, the tin bloom and devitrification did not show strongly. Sometimes when you want an effect, you are
unable to provoke it.
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