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Found 2 results

  1. Hi everyone. I have been using Helios porcelain in a community studio where they only fire cone 10-11 reduction. At home I have a Cone 8 electric kiln, and while the Helios can be fired to Cone 7 I am concerned about whether it will vitrify enough for the translucency I want. (My kiln is too large to fire experimentally). I find it very easy to throw with Helios, and it's only slightly more fussy than the stoneware bodies I have used. As long as I dry it slowly I have had no issues with cracking or kiln slumping (knock on wood). I decided to try Elaine's Crystal Cone 6 from Sheffield. I had a terrible experience with it. I tried throwing it softer and stiffer but in both cases the clay stripped away on the outside when started to pull it. I used a sponge to try to circumvent this thinking less friction, more distributed pressure would work, but it still piled up and peeled away with the slighted pressure (definitely not gonna pass the "3 pulls philosophy" here). I also found that the slightest amount of collaring resulted in wrinkles and it tended to slump on the wheel very easily. Since the Helios doesn't have these issues I am inclined to think it's the clay body combined with an incompatibility with my throwing technique. The qualities I seek in a porcelain are translucency and throwing ease. Color is slightly less important though the whiter the better. (I don't mind the slight pinkish color of the Helios). Can I expect these qualities from a Cone 6 clay body? I am curious to know what recommendations I can find from this community for a commercially available porcelain cone 6 (BTW: I'm in the Northeast) If anyone has thrown with Elaine's and understands how to avoid the "peeling" issue I would be curious to know how you avoided this. If anyone has experience firing to Cone 7 oxidation with the Helios what were your results? Thanks in advance.
  2. I have been given a 25kg bag of powdered porcelain. If I want to use this to make casting slip, what other ingredients would I need and in what proportion? Also, could I use it for throwing - if so, same question, what else would I need to add? I hate to waste a 'freebie' so would welcome any helpful comments.
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