Dennis Davis on sun 3 aug 97
Jim Lee wrote: Could somebody please describe the appearance of the
tessha glaze.
........................................................................
I have used the recipe I put on the list only as a salt liner and it is
sort of a mahogany color in the lower inside of the pots. Where the
salt hits it it goes gold/yellowish as most iron glazes seem to do in
salt.
The following is from Hamer's The Potter's Dictionary:
"The connoisseur makes many sub-divisions of the temmoku family of
wares. The three main types are called temmoku, tessha, and kaki.
Temmokus are the black and dark brown glazes with a tendency to break to
rust on the rims and sharp edges. If the rust-coloured parts spread
over more of the glaze causing rust patches, it would be called tessha
and if the rust covered most of the surface it would be a kaki glaze."
"TESSHA. A variation of the temmoku glaze in which the rust parts
spread in patches over about half the surface. The rust colour is due
to the crystallization of the red oxide upon cooling."
Following is from Fournier's Illustated Dictionary of Practical Pottery:
"TESSHA: A Japanese glaze of the temmoku family but more metallic and
breaking to iron reds. . . . . The firing schedule willl radically
affect the glaze. Quick cooling to 900 degrees Celsius is recommended."
| |
|
