Tuesday, April 24, 2007

Form & Surface Treatment - What a difference

This is a bowl I made about a year ago using a 50's plastic salad bowl as a form for the bowl shape and cutting a newspaper pattern out to make the base. It is quite large and was absolute murder to put together. I had to form the base and bowl shapes, allow them to get leather hard, assemble the base and then mount the bowl form on top. Even though I thought I had estimated the curve, it still took quite a bit of twiddle to get the two forms to marry well. I added the side detail at the side of the base just off the top of the head as I was assembling the piece and manipulated the rim of the bowl to creat the undulations, then added the tendrals to finish it off. The whole thing is glazed in celadon. This form really encourages glaze run and I had difficulty after the firing with a stuck foot. (A previous piece which was just the base form only with an added bottom to make a square vessel did not work out well and the foot pulled away when I removed it from the kiln.)

What a difference between the top image and this one. The second piece has a Southwest feel because of the glaze. I love the variations of color on the base. This time I made the base a bit taller and the corners are joined at a different angle.
The second piece was constructed in exactly the same way, but appears to be very different because of the glaze. This is a shino from Cayote Glazes. And this time, I waxed the feet far up on the base to be sure that there would be no sticking this time to the kiln shelf. I also used lots of kiln wash which allows the piece to roll on tiny granules on the shelf surface as the piece expanded and contracted during the firing/cooling process.

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