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- 06-April 10
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Posted 21 May 2013A 23x27 inch kiln with 3 inch brick will put out about 14,000 BTU's per hour of heat into the room at cone 6. That's like leaving two average size stove burners on full blast. At cone 04, about 11,000 BTU/Hr.
True, but you have to also take into account the (supposed) air turnover rate in that space given the existing ventilation on the BTU / hr. accumuilation in the space? And also minus the heat pump efect of the AC unit in BTU/ hr.
And the fact that it diod NOT dop this before. It started suddenly. One firing .....not an issue.... next huge issue.
It still does not make sense.
Potterychick....are you saying that SUDDENLY the kiln lid is havi ng this big crack / sealing issue? Cause if it is not that.... then it is not that.
Posted 21 May 2013....... he said that he had talked to a couple glaze tech people and they thought there was nothing to be concerned about since iron is the only thing likely to leach.
This is true. Thre are a tiny number of people whio actually have a disease whre additional iron would be bad.... but they'd have to use the piece of pottery continually with some sort of acidic material in it to even become CLOSE to an issue.
That being said, if I am remembering correctly Mononna Rossol does mention having knowledge of one legal case where a saturated iron red then oversprayed with red iron oxide on the INSIDE of a coffee mug caused some itron poisioning issues with ........ are you ready for this.... a lawyer who drank coffe out of that mug repeatedly everyday.
But this is a rare exception. (And not exactly a great way to approach the glazing of food surfaces.)
Posted 21 May 2013oldlady,
I recently arranged the acquisition of a 700+ piece collection of historical works from the estate of a collector for my college, New Hampshire Institute of Art. Works cover a huge range of makers from Adrian Saks to Otto Heino, Don Reitz to Tom Coleman, Chris Gustin to Karen Karnes, and so on. The collector's sister very generously wanted it to go to a place where the use of it in a teaching collection would pass on her brother's love of ceramics to new generations. It is now housed in new cases in the ceramics building as the "Richard D. Murphy Ceramics Collection", and students are benefiting from this wonderful resource.
So if you are not looking at this collection of yours as a potential source of revenue (and need to sell it), and something like a tax deduction instead would be useful.... maybe seek out an institution that you favor and see if they would like to have the pieces. A big "pass it forward". One of my recent "Letters From The President" columns in the Potters Council "Potters Pages" publication focused on just this whole, "What is going to happen to your collection when you are gone" kind of thing.
Posted 20 May 2013Study hard. Remain a student of clay your entire life. Have a highly critical boss (you). Make lots, keep little. Have exceptional aesthetic and technical standards. Take what you do seriously and make sure others know that. Put in 120% all the time. When all that is done.. .... sell the sizzle.
Posted 20 May 2013I just saw stuff when I was over in Yixing, China that blew me away as to the technical execution..... amazing. Many of which I pondered, "How is this done"?
What if the whole bowl was a very thin bone china, fired to maturity in the ususal slump mold. Then over the translucent body a resist stencil of the pattern was put on and then a opaque white glaze fired to a lower temperature was applied over the resist. So the body only is showing through the area that the stencil protected.
Really...... haven't got a clue. Amazing feat no matter HOW it was done.
- Member Title:
- Age Unknown
- July 19
- Wilton, NH USA
- woodfiring, Japan, Chado, Iaido
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