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Obvara Firing Technique


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#1 Marcia Selsor

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Posted 26 August 2013 - 08:15 PM

Fired some heavy textured pieces in Obvara firing. I like the affects.Biggest problem was chunk of rocks in this clay. ..some up to 1/4". I have a pile by my wheel.
I threw some holes in these pieces where the rocks were.

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#2 Benzine

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Posted 26 August 2013 - 08:32 PM

Love those Marcia.  They almost have a wood-like texture. 

 

I look forward to trying this some time.


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#3 Evelyne Schoenmann

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Posted 27 August 2013 - 02:16 AM

Absolutely beautiful Marcia. Congrats!

 

Did you do the crackings with sodium silicate? And how did you get the black top and bottom part in pictures 1 and 3?

 

Evelyne


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#4 Marcia Selsor

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Posted 27 August 2013 - 06:29 AM

Absolutely beautiful Marcia. Congrats!
 
Did you do the crackings with sodium silicate? And how did you get the black top and bottom part in pictures 1 and 3?
 
Evelyne

yes, I used Sodium silicate for the crackling. The black happened on the smooth surface.
Marcia

#5 Evelyne Schoenmann

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Posted 27 August 2013 - 09:09 AM

Thought so, thanks. It looks great! I could coax a potter friend here in Switzerland into trying the Obvara Technique together with me. I was spreading the word and now we are 5 already who wants to try it. Maybe beginning of next year. Will ask you a billion questions before we start, you'll see. You got me hooked Marcia!

 

Evelyne


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#6 Marcia Selsor

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Posted 27 August 2013 - 12:50 PM

Just start playing around with it. It is fun and you can watch it happen. I find the richer the texture the more intriguing to me. But some smooth terra sig pieces can also be awesome.
Look at you tubes , there are quite a few.

Marcia

#7 Evelyne Schoenmann

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Posted 27 August 2013 - 01:04 PM

I have already an "Obvara-File" with lots of informations and videos.... Thank you! I'am looking forward to play around with this technique....

 

Evelyne


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Studio: schoenmann ceramics
In love with alternative firing methods
www.schoenmann-ceramics.ch


#8 Frederik-W

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Posted 28 August 2013 - 07:56 AM

Your pots are stunningly beautiful !

I like the earthy effect, I like the texture and the colour. Congratulations.

 



#9 Marcia Selsor

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Posted 28 August 2013 - 08:46 AM

Thanks Frederik. I am intrigued how this firing technique reacts to surface texture. I can see all kinds of potential for texture. I like the earthy ruggedness of the colors too.

Marcia

#10 Chris Campbell

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Posted 28 August 2013 - 10:14 AM

I love texture as much as color!! Fabulous work Marcia ... Wish I could attend that firing workshop.

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#11 Marcia Selsor

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Posted 29 August 2013 - 12:59 PM

We'll be doing Obvara firing in Minneapolis Oct 11-13
http://ceramicartsda...iring-surfaces/

Marcia

#12 Pugaboo

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Posted 29 August 2013 - 10:07 PM

Those are amazing!

Maybe once I get the group at the studio over the shock of introducing underglazes I'll get to work on getting them to try alternative firing methods. Though I mentioned wanting to try pit firing one day and a couple seemed interested but others were like why would you want to do that? Or they said tried that and the pots always turn out ugly. I'd like to try raku one day as well not sure if that's considered and alternative firing method or not. I did find a studio an hour or so away that you can pay to use their rake kiln but they were in the middle of moving and had it dismantled and were not sure when they would get it set up again.
I live in the city limits and they have burning laws or I'd already have bought a metal trash can and played around with it on a small scale just to see what effects I would get.

So many things to try why oh why did I waste all those years just painting!

T
The world is but a canvas to the imagination - Henry David Thoreau

#13 Marcia Selsor

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Posted 29 August 2013 - 11:04 PM

Those are amazing!

Maybe once I get the group at the studio over the shock of introducing underglazes I'll get to work on getting them to try alternative firing methods. Though I mentioned wanting to try pit firing one day and a couple seemed interested but others were like why would you want to do that? Or they said tried that and the pots always turn out ugly. I'd like to try raku one day as well not sure if that's considered and alternative firing method or not. I did find a studio an hour or so away that you can pay to use their rake kiln but they were in the middle of moving and had it dismantled and were not sure when they would get it set up again.
I live in the city limits and they have burning laws or I'd already have bought a metal trash can and played around with it on a small scale just to see what effects I would get.

So many things to try why oh why did I waste all those years just painting!

T


Pugaboo.
go online and buy a roll of fiber, 1 inch thick and 8 pound test about $78
.Next get a roll of hardware fabric from Home Depot $5
you will need some bricks for the floor , burner and some clay uttons and kanthan wire (Archie Bray sells I by he foot) also available on eBay but check the gauge.
or the Obvara, check the yo tubes and see how small the kilns are.
I may be coming to Ga. Next year. eve yo there.There is no smoke with Obvara. aNd Raku can be very smokeless as well. I live within City limits too.
Marcia

#14 Wyndham

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Posted 30 August 2013 - 01:39 PM

Marcia, I just introduced a fellow potter that does pit firing to the Obvara youtube vids, looks like a new convert.

 

He was as amazed as I when the pots don't explode on water cooling.

 

He and I were discussing the possibility of adding other ingredients to the beer mash mix like Miracle Grow  which has metal sulphates for different coloring possibilities.

Wyndham



#15 Pugaboo

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Posted 30 August 2013 - 02:36 PM

Ummm Marica.... What kind of fiber? Sorry I'm so new I haven't a clue what that is. I am going to go by that website and see what some of the other stuff is. Thanks for the info though since I will add it to my list of stuff to research and learn loads more in the process like watching the YouTube videos. Have you ever done a video or written a book?

T
The world is but a canvas to the imagination - Henry David Thoreau

#16 Marcia Selsor

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Posted 30 August 2013 - 04:16 PM

Hi, Pubaboo. Ceramic fiber..sorry I didn't mention that. I have a nice little roll that a refractory company gave me. It would work for a small obvara kiln. I like the idea of a smaller kiln there because you want the pieces to be the right temperature when you pull them out of the kiln and dip them into the mix.
Look at the you tube with Jose Ramon , I think that is his name. tiny kiln.

Marcia

#17 Pugaboo

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Posted 31 August 2013 - 10:55 PM

I just figured out that Kanthal wire and Nichrome wire are the same thing! Lol I also found a site that sells it in different gauges including an 8 gauge which is a bit heavier than what came with my bead rack. Will need to go back there and order when I need replacements. Am still reading up on ceramic fiber though I think there are some kilns built with this stuff instead of bricks if I am researching correctly? Still working on figuring out what the burner is did find a raku burner but not sure if its the same type for obvara or not need to watch the you tube videos some more and see if I can tell by looking. Did find the clay buttons for attaching the fiber blanket with. Had no idea they even made such a thing. If I ever get to see a raku or obavara kiln in person I will at least know what I am looking at and how it all kind of works. I never saw the point of you tube until I started doing clay but now its so amazing to watch someone do something you've only read about in a book. It's like so that's what they meant!
The world is but a canvas to the imagination - Henry David Thoreau

#18 Formseth

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Posted 13 September 2013 - 02:22 PM

Marcia, I first saw the word obvara two weeks ago when reading your info for the Mpls firing conference. Since I was about to fire my backyard raku kiln for the first time last Sunday, I decided to make it a total experimental experience and try obvara. I watched as many You Tube videos as I could find, mixed up your recipe for the brew and my friend and I gave it a try. The kiln worked great and we got some pretty awesome scalded finishes on our pots.
We are not exactly sure why some pieces turned quite black, some have the lichen effect, some got toast brown and a few picked up almost no color at all. Is the secret in the temperature of the pot when it is dunked? Do you cool your pot a little before dunking? Do you swish your pieces in the brew for any length of time or dunk and pull immediately? Does the time the pot is cooled in water affect the color?
Any helpful hint or suggestion you can provide would be very much appreciated. Since we had so much fun with obvara and want to learn more, we are going to try the process again on this coming Sunday.
The photos of your pieces are an inspiration for us.

#19 Chris Campbell

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Posted 13 September 2013 - 04:56 PM

Just an FYI ... Marcia away on holidays for the next few weeks.

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#20 Formseth

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Posted 14 September 2013 - 10:45 AM

Thank you for letting me know that Marcia is away. I will try another obvara firing tomorrow and may get a few answers, but most likely more questions about this mysterious process.




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