09/23/09 – Devitrification – Devitrification can sometime occur on glass that has been fired and held at a high temperature. A crystalline substance appears as a dull finish on the surface of some glass when heated above 1000° Fahrenheit and held for an extended period of time. This is a white scum that will appear on the glass. Normally this is an undesired occurrence, but some artists actually try to achieve this look on their pieces.


Leave a Reply

Please log in using one of these methods to post your comment: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

%d bloggers like this: