Forms of Glass
About 001100 Sheet Glass
Very faint green tint when viewed on edge.
Stable. No color shift. Fusible / Bullseye-compatible.
BROWN-ORANGE MARKS ON TEKTA
After years of experiments, we’ve found that the best separator for keeping a newly formed sheet of Tekta from sticking to our annealing lehr’s metal conveyor belt is natural iron oxide, aka rust that forms on the belt as a result of thermal cycling.
As a result of this production process, rust will occasionally imprint upon sheets during annealing. These imprints almost always wash off. (For ease, we recommend using this Scotch Brite pad, but a normal rag will usually work too.) In rare cases when they resist complete cleaning, they will dissipate in a full fuse. In short, these marks fall within our quality standards, and will be undetectable in a full fuse.
See just below an example of Clear Tekta with this type of discoloration, before and after cleaning and then fired on top of Warm White (000920) opalescent sheet glass.
Below: Clear Tekta, uncleaned
Below: The same piece of Clear Tekta, cleaned
Below: The same piece of Clear Tekta, cleaned and fired on top of Warm White (000920).
See another example. This time, Clear Tekta is shown before and after cleaning then, fired on top of another piece of cleaned Clear Tekta.
Below: Clear Tekta, uncleaned.
Below: The same piece of Clear Tekta, cleaned.
Below: The same piece of Clear Tekta fired on top of another piece of clean Clear Tekta.
You can download the article here.