Out of the Fire! New Pots from the Wood Fired Kiln!
Here are Becky's pouring bowls. These reached at least cone 11, but "Red Reserve" is a glaze that copes with heat very well and is static without being boring!
As this was something of a test firing I took the opportunity to try several glazes that I was unfamiliar with, two that peaked my interest were a strontium matte and a barium matte glaze. You can see the barium matte at the front in the middle of the top shelf. Barium* and Strontium can enhance colour in glazes, particularly glazes that contain some copper.
|Strontium Matte ( white stoneware 12 x 6 inches, 305 x 150mm)|
|Barium Matte (white stoneware 12.25 x 6.5 inches, 317 x 165mm)|
The strontium matte had a more uniform colour, but the barium matte changed dramatically from green to blue where the glaze was thickest. Both have a really interesting sparkling surface from numerous tiny crystals that have formed in the glaze.
A few of the freshly unloaded pots sitting in the late afternoon sunshine. There are a few of Jim's pots on the left of the photo, and some melted pyrometric cones in front of them. The rest of the pots are mine. I mostly had used celadon, copper red, saturated iron and shino glazes in this firing. Jim had used mostly shino and occasionally celadon.
|Copper Red 7.5 x 6.25 inches, 190 x 165mm|
In spite of having difficulty controlling reduction in this firing, this copper red was very forgiving and gave good results. Unfortunately, the mirror finish ensured that it was almost impossible for me to photograph without reflections!
|Copper Red/Green 6 x 5 inches, 150 x 130mm|
|Saturated iron glaze 6.5 x 5 inches, 150 x 130mm|
|Iron Red 7.5 x 9 inches, 190 x 230mm|
This one is glazed with "Red Reserve" from the book by Tony Birks. It isn't a bright red, but more a refined dark purple colour that reminds me for some reason of vintage sports cars!
|A "golden shino" 8.5 x 7 inches, 215 x 180mm|
This one came out more of a mirror bronze in colour with some ash flecks giving the surface some extra interest.
|Mystery glaze! 7.5 x 4.5 inches, 190 x 115mm|
I am fairly sure that this little bottle was glazed with a new batch of a white shino glaze that I made up then added 3 percent iron oxide to. I am surprised by how dark it is.
|Iron green (celadon) glaze, 7.5 x 6.5 inches, 190 x 165mm|
Many "flavours" of celadon glazes can be made, from gentle pale blue, through pale grey to quite a dark green. All get their colour from iron oxide that is fired in a reduction atmosphere if they really are celadon glazes! Many people now are more used to "celadon" that is from copper or chromium fired in oxidation in an electric kiln.
|Celadon bowl, 5.5 x 8.75 inches, 140 x 220mm|
This firing could not have been possible without the assistance and encouragement of several special people.
Jim, who really wanted to do another wood firing and provided much of the wood and did a lot of stoking when we were pushing through some of the more difficult and arduous hours of the firing.
Becky, who has persevered with potting in spite of her busy life, and has been a great encouragement to Laura and myself over the years.
And especially Laura, who has supported and encouraged throughout the entirety of this potting adventure, and does so many helpful and practical things throughout the firing of the kiln, both at the kiln side and also in the kitchen!
Yes, Barium Carbonate is a poison, just a spoonful if eaten could kill you. Once it has been fired and made into a glass, it is of course much safer, however it is not recommended these days as an ingredient of a glaze that will come in contact with food or drink. It is also good to wear rubbler gloves when working with Barium in glazes. Strontium Carbonate can often be used as a non toxic substitute for Barium.