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Firing
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Sabine Alienor
Posted 2010-01-15 21:49 (#20)
Subject: Firing



Member

Posts: 24

Location: France		Hi
I've just tried Prometheus Bronze Clay (sended by 2 french suppliers).
I've encountered firescale.

I have followed the firing directions as shown (for the wrappings) on the video and fired 30 min à 750 °C.
What could I do to improve the results?

Thanks

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live4art
Posted 2010-01-16 12:34 (#21 - in reply to #20)
Subject: RE: Firing


Hi Sabine,

I Loved your watch, how wonderful it would be if it turned to bright broze colour!
If you have a pickling solution you can use it, otherwise, put some vingar in a glass, add some table salt and leave your piece in it for a 15 minutes or more. Then rinse it with water, brush with a steel brush and thats all. After this, leave it in water for some time to get rid of the vinigar which possibly had penetrated the tiny pores of bronze.

Vinigar; I would prefer it in my salads but not in a glass close to my nose! So, may I share a secret with you? ODAK, the manufacturer company of Prometheus™ Bronze Clay is about to release a pickling powder, easy to use and without any odour. Send an e-mail to Ozgur; the director of the company, he gladly would send a free sample to your address!

A few more hints about reducing fire scale; using some more paper and wrapping with fiber blanket tightly, will help you much. Also, taking the piece out of the package when it is a little bit hot and quinching in water is good also.

And one more thing about firing temp/time, 700degC/ 30 minutes for the small pieces like your watch will give petter performance- less fire scale and less deformation. I wish you great success at your following works ).

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Sabine Alienor
Posted 2010-01-16 12:53 (#22 - in reply to #20)
Subject: Re: Firing



Member

Posts: 24

Location: France		Thank you very much for your answer.
I will send an email to Ozgur and try lower temperature.
Thanks again!
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Sabine Alienor
Posted 2010-01-19 13:55 (#23 - in reply to #20)
Subject: RE: Firing



Member

Posts: 24

Location: France		Hi!
I've followed your advice and yesssssssss!
I'm very happy, thanks a lot, it works!



Edited by Sabine Alienor 2010-01-19 13:56
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live4art
Posted 2010-01-20 15:54 (#24 - in reply to #20)
Subject: RE: Firing


hello Sabine,
are you open to an experiment? Yesterday nite I fired a piece of Prometheus Bronze Clay at 750 deg.C. for 30 minutes, without any paper towel or ceramic fiber, it works! I put it in hot kiln and took out straight after 30 minutes. Wonderful red copper colour! best wishes.
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Sabine Alienor
Posted 2010-01-20 16:47 (#25 - in reply to #24)
Subject: RE: Firing



Member

Posts: 24

Location: France		Ho ho! Was it a big piece or a small one? Did you need to pickle it?
I love to experiment!
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Guest
Posted 2010-01-20 17:27 (#26 - in reply to #25)
Subject: RE: Firing


about 15 gr each. Although it left most of the fire scales itself while cooling, I pickeled it then brushed to get rid of the remainders. the colour is peerfffecttt!!

Now I have some cukies(loll) in the kiln at 800 deg., I'm impatiently waiting to see what will show up. 15 minutes left..
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Guest
Posted 2010-01-20 18:09 (#27 - in reply to #26)
Subject: RE: Firing


800deg./ 30 minutes also ok, no distortion, even stronger. Now comes 800 deg./20 min.
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live4art
Posted 2010-01-20 18:30 (#28 - in reply to #20)
Subject: RE: Firing


yep, 800deg./ 20 minutes is also perfect
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Sabine Alienor
Posted 2010-01-20 19:40 (#29 - in reply to #28)
Subject: RE: Firing



Member

Posts: 24

Location: France		Great! I'm finishing a piece and will fire it tomorrow morning. I have a student all day, I'm sure he will appreciate the test
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Sabine Alienor
Posted 2010-01-21 15:16 (#30 - in reply to #29)
Subject: Re: Firing



Member

Posts: 24

Location: France		Good news!!!!! I have tried to fire with a torch and guess what??? It works!!!!!!!!!!!!!!!!!!!!!!!! 5 min to red color, then threw in cold water and NO FIRESCALE LEFT!!! Yesssss!!!!!!!
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live4art
Posted 2010-01-21 21:46 (#31 - in reply to #20)
Subject: RE: Firing


You cannot be serious! Im gona try it tomorrow. I cant belive it. Perfecccttt!

By the way, isnt redish copper colour enough yet? How about a golden yellow? If you have a steel pan and some activated carbon, embed your piece 1 cm close to the sides, into the carbon and put the pan into preheated kiln of 750 deg.C. After 1 hour at 750, take the pan out, let it cool down a bit and take your piece out.

see you tomorrow
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Sabine Alienor
Posted 2010-01-21 22:34 (#32 - in reply to #20)
Subject: RE: Firing



Member

Posts: 24

Location: France		Yes I am yes I am (serious OK not always, but this time, I am! )
I so love tests that when you told me it could fire on a kiln shelf at 800 °C, I was sure it could be OK with a torch, so I tried this afternoon
By the way, the student I had today is now absolutly sure that I am totally crazy.... when I quenched the piece after the torch firing and I saw it worked, I danced in the studio.....

I do prefer golden yellow for bronze so I brush it very hard and it turns beautifful gold colour. That's great because you can play with different colour on a piece : from red to golden yellow!
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"Sam"
Posted 2010-01-22 06:27 (#33 - in reply to #20)
Subject: RE: Firing New Bronze Clay In Microwave Kiln


Hello there, I am a warmglass artist from TN - USA and have been testing various metal clays using the MicroKiln (microwave kiln) and have successfully sintered Art Clay Silver, PMC and now the new Art Clay Copper. I just read about your new bronze clay and would like to have an opportunity to test it using the MicroKiln. With the introduction of the new metal clays like ACCopper and now your Prometheus Bronze this presents an excellent opportunity for those who cannot afford to purchase a regular kiln to be able to fire silver clay with glass & stones and an opportunity to layer the various quick firing clays just using an inexpensive MicroKiln.

The majority of my glass design and metal work is done using a conventional glass kiln, however; the MicroKiln allows me the opportunity to sinter metal clays and cool them in 8 minutes or less.

Can you sale your Prometheus Bronze Clay to the United States customers? If you would like to see what I have done thus far with the other types of non-carbon required metal clays please checkout my help desk blog at:
http://www.microwavekilnhelpdesk.com --- just scroll down the page from various pics

I am excited about your new clay and look forward to working with it.

Thank you for an opportunity to discuss .......

Sylvanye "Sam" Roh
Designs by Sylvanye Glass Studio
Email: Sroh@comcast.net
Web: http://www.designsbysylvanye.com
Blog: http://microwavekilnhelpdesk.com
Facebook: http://www.facebook.com/home.php?#/Slroh?ref=nam
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Sabine Alienor
Posted 2010-01-23 10:15 (#37 - in reply to #20)
Subject: RE: Firing



Member

Posts: 24

Location: France		I tried new firings.
This one is in carbon, 1h at 750 °C
Great result, no firescale, beautiful colour :
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live4art
Posted 2010-01-23 12:48 (#39 - in reply to #37)
Subject: RE: Firing


Member

Posts: 6

Hi Sabine,
Wonderfull! However I am seriouusly suspicius that you are not sharing some things with us. Is it the reflection of the surface colour or do you add a pinch of this, a pinch of that to get this whitish colour
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Sabine Alienor
Posted 2010-01-23 13:09 (#40 - in reply to #20)
Subject: RE: Firing



Member

Posts: 24

Location: France
I have made a tutorial pictures by pictures for this pendant.
You will see there is no secret but this clay by itself who has this beautiful colour.
I will publish it as soon as possible
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lalecan
Posted 2010-01-23 21:21 (#41 - in reply to #40)
Subject: Re: Firing


Member

Posts: 8

I like the colour Sabine, I wish I could have the same. Mine looks very red
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lalecan
Posted 2010-01-23 21:25 (#42 - in reply to #33)
Subject: RE: Firing New Bronze Clay In Microwave Kiln


Member

Posts: 8

Hey Sam,
What is a micro kiln? Is it something like a microwave oven we use at home for cooking food?
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lalecan
Posted 2010-01-23 21:27 (#43 - in reply to #32)
Subject: RE: Firing


Member

Posts: 8

So, I brushed my pendant and I can see the change of colour!
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lalecan
Posted 2010-01-23 21:32 (#44 - in reply to #28)
Subject: RE: Firing


Member

Posts: 8

I have tried the same thing and it works very nicely!
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bronzeclay
Posted 2010-01-23 21:53 (#53 - in reply to #40)
Subject: RE: Firing


Member

Posts: 36
25
Yes, I would like to see your tutorial as well.
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bronzeclay
Posted 2010-01-23 22:01 (#54 - in reply to #33)
Subject: RE: Firing New Bronze Clay In Microwave Kiln


Member

Posts: 36
25
Hi Sam,

I am a metalsmith and the moderator of this website. I have just checked your website to see what is a "microkiln". Honestly, I have never heard someone who uses microwave oven for this purpose and I must admit that I am very surprised. So, before answering your questions, first I must really understand this kiln. I am especially curious about the safety. So, I cannot tell if Prometheus' Bronze Clay safe to use in your micro kilns. Will get more info on that.
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Sabine Alienor
Posted 2010-01-23 22:09 (#55 - in reply to #20)
Subject: RE: Firing



Member

Posts: 24

Location: France		Hi
I have tried a microwave kiln for glass fusing and for Art Clay Silver.
I have made a video :
http://www.sabinealienor.com/dotclear/index.php?post/2008/08/19/Kit...
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bronzeclay
Posted 2010-01-23 22:11 (#56 - in reply to #55)
Subject: RE: Firing


Member

Posts: 36
25
Thank you Sabine, I am going to check it now.
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