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."