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Firign Experiment Cone 11 In 4.5 Hours


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#1 Brian Reed

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Posted 21 November 2013 - 11:31 AM

I recently tried to see how fast I could fire my glaze kiln.  I started with some glazes that do not require much reduction; white, temoku, iron wash.  I used all my clay bodies that I use and both small and big pieces.  Because I fire gas there was a small amount of reduction anyway, but for the most part I let the kiln breath and let it go as fast as it wanted to.  My mentor looked at the results and thinks that for the most part it was fire very close to neutral.  In the end I learn a bunch of stuff.

 

1.  There is one stoneware that I use that has more organic material than I had thought, and had severe bloating in those pots.

2.  The top shelf of my kiln is much cooler than the rest of the kiln.  I knew this but with the exaggerated firing schedule it became very real.

3.  My temoku glaze has a very wide range of firing temp maturity.  I think it would go from cone 9-11 and still look great.

4,  Even with the kiln going fast I had some reduction and some things turned out nice.

5.  Iron wash come out pretty light when not in a full heavy reduction.

6.  I think I can get a successful firing much faster than my current 10 hour schedule.

 

After the holiday rush I am going to try again and attempt a firing at 7 hours, I think that may be the sweet spot.

 

I made a video of the results in my you tube channel.

 

Reed Pottery. http://www.youtube.c...h?v=Zufz2XOPtRs

 

 

Has anyone else done an exercise like this?


Brian Reed

Throwing down in Washington State

http://www.reedpottery.com

Northwest Clay Club

#2 JBaymore

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Posted 21 November 2013 - 12:58 PM

At Kanayama (Japan) this past summer West Coast artist Tom Decker was also there and overlapped my time working there for a bit.  He was testing some clay from the pottery's land he'd "prospected", and dod Orton cone 14 in about 3 hours in a small test kiln he built for the purpose (gas fire).  https://www.facebook...&type=3

 

best,

 

............................john


John Baymore
Immediate Past President; Potters Council
Professor of Ceramics; New Hampshire Insitute of Art

http://www.JohnBaymore.com

#3 JBaymore

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Posted 21 November 2013 - 01:01 PM

FYI... industry fires in amazingly fast times.  It certainly can be done.  Some of those "I (heart) my Poodle" type mugs are going from fresh made to shrink wrapped for shipping in less than an hour.

 

On key for industrial fast process stuff is that the "clay" body is an alumino silicate material for sure.... but has little to no real clay.  And often the forming method has almost no significant moistre added (dry pressing) or the pressure from the forming process drives the wateer out as steam.

 

best,

 

.....................john


John Baymore
Immediate Past President; Potters Council
Professor of Ceramics; New Hampshire Insitute of Art

http://www.JohnBaymore.com

#4 Wyndham

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Posted 21 November 2013 - 01:05 PM

John, check your fb link it came back unavailable at present.

Thanks Wyndham



#5 justanassembler

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Posted 21 November 2013 - 10:47 PM

John, check your fb link it came back unavailable at present.

Thanks Wyndham

Its probably not shared publicly, friend him, or perhaps he can change the settings on that particular post to allow the public to view it.



#6 Rakuken

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Posted 22 November 2013 - 12:27 AM

I fire in a similar kiln with 2 forced air burners in about 7 hours. You can see my kiln and firing results in my gallery.

Aloha, ken

#7 Mart

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Posted 22 November 2013 - 08:35 AM

 

John, check your fb link it came back unavailable at present.

Thanks Wyndham

Its probably not shared publicly, friend him, or perhaps he can change the settings on that particular post to allow the public to view it.

 

 

No can do. I do not have a FB account.



#8 JBaymore

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Posted 23 November 2013 - 11:41 AM

Sorry........ it appears that in Facebook  you can't make a single picture "public".  And I have my settings down pretty tight in Facebook.... friends only.

 

It is just a picture of Tom bowing in front of the small kiln before unloading it.

 

best,

 

....................john


John Baymore
Immediate Past President; Potters Council
Professor of Ceramics; New Hampshire Insitute of Art

http://www.JohnBaymore.com




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