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Roman Furnace Project 2006: Photographs of Glass Vessels

Introduction ('Home')    The Barbecue    Woodpile and Ash Pits    Photographs of Pots

Photographs of Glass Waste    Photographs of Glass Vessels    Photographs of Final Weathering

This is a series of photographs of all of the glass we made during the 2006 firing. It includes some glass made by Bill Gudenrath.

The misty effect is caused by a potash-rich film deposited on the glass during annealing and is removed when the glass is washed in water. With over-annealing (when the lehr runs too hot), there is the danger that the potash-rich atmosphere will attack the glass surface, removing the fire-polished shine.

The yellow-green glass proved to be unstable and suffered from devitrification as it was being reheated and worked. This is because the total amount of alkali (soda ash and potash) included in the glass was excessive. The effect is best seen on the tazza (Photo 25) and in the close-up Photo 25a.

"If you build it, they will come."

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Calendar   Contact Us     Details of our reproductions can be found in our Gallery