John Baymore ... Wood-fired Chadogu and Pottery


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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby JBaymore » Apr 21st, '12, 22:16

MunGyeong Chasabal Festival 2012
MunGyeong, Korea April 28 - May 6, 2012

This is yet one more of the Chawan that I will have exhibited and for sale at the Festival coming up in Korea in less than a week.


JohnBaymoreCrackelIdoChawan1.jpg
JohnBaymoreCrackelIdoChawan1.jpg (59.24 KiB) Viewed 1470 times



JohnBaymoreCrackelIdoChawan2.jpg
JohnBaymoreCrackelIdoChawan2.jpg (67.1 KiB) Viewed 1470 times



JohnBaymoreCrackelIdoChawan3.jpg
JohnBaymoreCrackelIdoChawan3.jpg (72.59 KiB) Viewed 1470 times


best,

.............john
Last edited by JBaymore on Apr 21st, '12, 22:20, edited 1 time in total.
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby JBaymore » Apr 21st, '12, 22:18

debunix wrote:(wiping drool off keyboard)

Such a lovely finish to that glaze.



Thank deb. It is intended to resemble Jade. Plus it has that deep crackle effect that will stain in with time and use. These should "weather" well for an active user of Chawan.

best,

...............john
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby Chip » Apr 21st, '12, 22:22

Love the crackling on those, fantastic, John!

Again good luck on your trip.
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby JBaymore » Apr 21st, '12, 22:26

Thanks, Chip.

While I am excited to go to Korea for the frst time...... I am not looking forward to the length of the trip. I figured out that from leaving my door to arriving at the hotel in Korea's door....... I will be traveling for a total of 33 1/2 hours, counting driving to the airports, connections on flights, and driving 3 hours from Incheon to MunGyeong. Ugh!!!!!

Then factor in the 13 hour time difference..... and I'll be in zombie-land for a few days. :wink:

best,

..............john
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby Chip » Apr 21st, '12, 22:30

That sounds pretty draining! :shock:

I will be posting a topic under the new cultural forum regarding travel. I hope you will be able to add insights as time permits.
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby JBaymore » Apr 22nd, '12, 19:42

MunGyeong Chasabal Festival 2012
MunGyeong, Korea April 28 - May 6, 2012

These are more wares that I will have exhibited and for sale at the Festival coming up in Korea in less than a week.


Chaire with burnish gold lustre accents

JohnBaymore-NukaChaire-w-Gold.jpg
JohnBaymore-NukaChaire-w-Gold.jpg (131.62 KiB) Viewed 1431 times



Oribe Glazed Guinomi with burnish gold lustre accents

JohnBaymore-OribeGuinomi-w-Gold.jpg
JohnBaymore-OribeGuinomi-w-Gold.jpg (63.07 KiB) Viewed 1431 times



Crackle Glazed Guinomi with gold purple crackle enhancement

JohnBaymore-CrackleGuinomi-w-GoldPurple.jpg
JohnBaymore-CrackleGuinomi-w-GoldPurple.jpg (100.72 KiB) Viewed 1431 times



best,

.................john
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby debunix » Apr 22nd, '12, 20:08

Is the difference in color between this stunning lavender gem

Image

and this more gray-green beauty

Image

a difference that develops during firing or variation in the glaze chemistry?
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby JBaymore » Apr 22nd, '12, 21:08

They actually are two completely different glaze bases. The crackle pattern in both is caused by the same basic situation however. The crackle patterns in the two of them are subtly different also, although in the photos that is hard to see.

There is a property called the Coefficient of Reversible Thermal Expansion......usually abbreviated as C.O.E. in ceramics. When the glaze layer shrinks more than the underlying clay body as the kiln cools (has a higher COE), the glass which is then in tension, fractures. That is what crazing actually is.

I use molecular calculation to formulate the glaze chemistry after firing to put that COE expansion number in the "9" range (I won't go into the units or the "rasied to powers" here) when the normal glaze fit for my clay body is about 7. If I get it up to 9, I always will get that kind of crackle.

Then the grey-green glaze also has reduced red iron oxide in it, whereas the "purple" one does not. The "purple" one actually came out of the high fire glaze kiln as a milky white glaze. Exactly the same as this one:

Image

Then gold chloride with fluxes was painted onto the white piece in a very, very thin layer. The properties of fired gold when it is present in a molecularly thin application cause the light to refract and be seen as purple instead of the expected gold color. It also stains in the craze lines,.......and is a fired in color... not like tea staining.

Hope that explains it. Too much science... takes away the marvel and the magic :wink: . And thanks for the very kind adjcetives!!!! :D

best,

................john
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby debunix » Apr 22nd, '12, 22:28

Not too much science to take away the magic.....for me, that sort of thing adds to the magic.
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby hopeofdawn » Apr 24th, '12, 12:05

Beautiful, beautiful pieces--count me as another person currently drooling into her keyboard ...
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby JBaymore » Apr 25th, '12, 21:43

Thanks everyone.

I am outta here and off to Korea to the MunGyeong Chasabal Festival. See you all when I have web access again or when return home.

best,

......john
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby Chip » Apr 25th, '12, 23:35

Safe journeys, John. And have a blast! :mrgreen:
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby JBaymore » May 19th, '12, 22:22

I'm back in New Hampshire from Korea and then Japan. Or at least my body is.............. my mind is still on "Japan time". Jetlagged to the max.

More when the brain returns :wink: .

best,

.......................john
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby Chip » May 19th, '12, 23:06

Welcome back, John. Hope you brought some great tea home!
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Re: John Baymore ... Wood-fired Chadogu and Pottery

Postby Seeker » May 20th, '12, 12:46

Gorgeous chawan!
I'd buy that one!
:mrgreen:
And super stunnung chaire - I'd buy that one too!
:mrgreen:
Best wishes to you on your journey, and safe & successful travels to you!
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