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#1
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kilns and cones
Have a look at http://www.ortonceramic.com for all the information you need
about cones and cone firing Dave "MKent41616" wrote in message ... My quesion is, at school they use several cones to mark the progession of the firing. They range from cones 4-10. I will be firing at no higher than cone 5 or 6. Do I also need several cones or would two do, say cones 4 and 6? Thanks! |
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#2
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I would use three cones. A cone that is one cooler than your firing temp., a cone for your firing temp., and a cone that one hotter than your firing temp. On the first firing, I would place several pads of cones in various places throughout the kiln as well as the one at the peep hole. Any time you fire a kiln for the first time, whether it is new or old, it is essential that you know it is firing evenly. By placing several pads of cones, you can compare results throughout your kiln. The number of pads would depend on the size of the kiln - but don't be stingy. The information you gain will be invaluable to you in future firings. By using the three cones, you will know when the first cone goes down that your are nearing completion of the firing and need to pay close attention. The hotter cone tells you if you went too far. When you shut the kiln down, cover all the peep holes and leave the kiln alone until it is cool, This is especially important if you are a novice. If you open the kiln too soon, you will never know if the pot cracked because of your building technique or because the kiln was still too hot. This is probably the hardest part of being a potter - waiting (waiting, Waiting, WAITING) for the kiln to cool. Jan C. |
#3
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In article et, Jan
Clauson writes I would use three cones. A cone that is one cooler than your firing temp., a cone for your firing temp., and a cone that one hotter than your firing temp. On the first firing, I would place several pads of cones in various places throughout the kiln as well as the one at the peep hole. Any time you fire a kiln for the first time, whether it is new or old, it is essential that you know it is firing evenly. By placing several pads of cones, you can compare results throughout your kiln. The number of pads would depend on the size of the kiln - but don't be stingy. The information you gain will be invaluable to you in future firings. By using the three cones, you will know when the first cone goes down that your are nearing completion of the firing and need to pay close attention. The hotter cone tells you if you went too far. I agree that it is important to find out if your kiln fires evenly and so initially you would be wise to follow this advice. However, for subsequent routine firings I would only use two cones. One for the glaze firing temperature and one below this so that you get some warning of the time shut down. When you shut the kiln down, cover all the peep holes and leave the kiln alone until it is cool, This is especially important if you are a novice. If you open the kiln too soon, you will never know if the pot cracked because of your building technique or because the kiln was still too hot. This is probably the hardest part of being a potter - waiting (waiting, Waiting, WAITING) for the kiln to cool. Jan C. -- David David Hewitt Pottery 7 Fairfield Road, Caerleon, Newport, South Wales, NP18 3DQ. Tel:- +44 (0) 1633 420647 Fax:- +44 (0) 870 1617274 Web:- http://www.dhpot.demon.co.uk |
#4
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Bisque it to cone 06. This leaves it porous enough to take up glaze before
going up to cone 5. Repeating, bisque at cone 06 (~1000 degrees Celsius.) Tony, TX -- http://tonyolsen.com/up/ "GaSeku" wrote in message ... Ok, now that I have gotten such great info I am getting ready to use the kiln. I have some things already made that aren't that great so I figure I will use them as a test. I have cone 5 stoneware. What cone should i fire them to bisque? The school does cone 8, but some have said that's too high. Thanks in advance. |
#5
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Now you're confusing me. Does your school bisque to cone 8 or cone 08? I usually bisque to cone 07. Jan C. |
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