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Chantay

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    Chantay got a reaction from KLS in Large Flat Pieces Cracking During Glaze Firing   
    I am working on larger ( greater than 8 inches) bonsai pots.  What I have learned to do it make extra feet to support the bottom of the pot.  The bonsai pots have feet, but they are heavy and have the same issues with cracking as a flat plate.  The feet are not attached and travel with the pot from making through drying, bisque, and glaze firing.  They are then thrown away as each pot is unique.  I have also done this with a large 24 inch platter that I made with feet.  I place the extra feet about every four inches.
  2. Like
    Chantay got a reaction from LawPots in Teaching Ceramics to Adults   
    My first pottery class, at a local college, was terrible. The class I'm taking now is so much better. In the first class the teacher offered very little instruction and minimal demonstrations. The class I'm taking now, beginning throwing, the teacher has a set schedule. Starts with cylinders, next bowls, etc.. She does several demos in each class. She also repeats, repeats, repeats instructions. The class is all adult, many older. I for one need the repeated instructions. My throwing has improved immensely after just the first two classes. She also allows room for experimentation and creativity. But this is a teacher who can teach good basics. Others in the class must like her. Most of the students are repeats.
     
    -chantay
  3. Like
    Chantay got a reaction from Roberta12 in Large Flat Pieces Cracking During Glaze Firing   
    I am working on larger ( greater than 8 inches) bonsai pots.  What I have learned to do it make extra feet to support the bottom of the pot.  The bonsai pots have feet, but they are heavy and have the same issues with cracking as a flat plate.  The feet are not attached and travel with the pot from making through drying, bisque, and glaze firing.  They are then thrown away as each pot is unique.  I have also done this with a large 24 inch platter that I made with feet.  I place the extra feet about every four inches.
  4. Like
    Chantay reacted to Seedy Potter in Large Flat Pieces Cracking During Glaze Firing   
    I am having trouble with successfully firing large flat pieces in a glaze kiln.  When I bisque fire them, I put a little sand under them to reduce the friction on the shelf as they shrink and move during firing.  This has been very successful.  However, I am hesitant to put sand in a glaze kiln especially with a vent master drawing air downward.  I am afraid that the sand will be drawn into molten glaze.    My question is:  is that a reasonable concern?  If so, what would any of you suggest to use to keep large pieces from breaking apart at ^6.  Might the problem be solved if I brought the kiln temp up much more slowly? What temp range is the most critical? 
     
    Is it possible that all the moving sand will have "found a home" by the time the glaze is molten?  This still feels if-y to me... I could use some sage advice! 
  5. Like
    Chantay got a reaction from High Bridge Pottery in Making colored slip   
    Robbin Hopper's Slip Recipe:
     
    75 Ball clay
    10 Kaolin
    5 Feldspar
    10 Silica
     
    I do a lot of slip trailing with an applicator.  If I want the slip to stand up firmly after I have sieved the slip I add a few drops of darvan and then add more ball clay, or some of the dried clay that I am throwing with till a thickened consistency.  All the ball clay makes this a nice slippery slip.
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