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| Tips, Techniques, and Questions -- Technical questions or tips |
2008-10-08, 3:49pm
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boro color bender
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Join Date: Jun 06, 2005
Location: The Oregon coast!
Posts: 10,039
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Activated carbon in the kiln etched my soft glass clear!
Ok, so this was weird. I've put charcoal in the kiln before and nothing happened to the finish of the beads... well I didn't have coal, so I used some activated carbon. All of the clear glass that wasn't reduced metallic silver glass kind of etched... weirdness I tell ya! The surface is totally matte. I'm not really happy about it, but it's good to know I guess. So if anybody has activated charcoal for the bronze metal clay, you might want to think twice about substituting it for charcoal. 
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2008-10-08, 4:22pm
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Where's the coffee?
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Join Date: Jun 12, 2005
Location: Southern Indiana
Posts: 847
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Can I be completely stupid and ask why you put the charcoal in the kiln in the first place? I'm so clueless. 
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Angie
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2008-10-08, 5:17pm
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Borovangelist
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Join Date: Jan 26, 2007
Location: Auburn, MA
Posts: 3,002
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Quote:
Originally Posted by BonfireBeads
Can I be completely stupid and ask why you put the charcoal in the kiln in the first place? I'm so clueless. |
I want to ask too 
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-Tom
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2008-10-08, 5:49pm
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Junior Member
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Join Date: Aug 12, 2008
Location: Iowa
Posts: 22
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I put the activated carbon in my kiln when I do silver/reduction glass. I've heard that it helps if you have problems with your beads un-reducing in the kiln. You can get it wherever they sell fish/aquarium supplies. Only thing is that you end up with a big container and it doesn't take much! Oh well, it will last forever All my beads come out great so it can't hurt!!!
My only question is what do you put the carbon in? The glass container I used broke even though I let it heat up with the kiln. Thanks!
Andrea
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Andrea
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2008-10-09, 5:13am
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phrit phreak
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Join Date: Nov 18, 2005
Location: in the Loess Hills of Iowa
Posts: 2,045
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weird for sure. I've never heard of doing this. I guess ya learn something new everyday
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2008-10-09, 5:20am
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Does my glass look 2 big?
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Join Date: Jun 21, 2006
Location: San Antonio, Texas
Posts: 613
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I've been using the activated charcoal every firing for the last month. Just pinch a bit from a large jar, which was my only option at the pet shop, and drop it on the bottom of the kiln, no container. After the firing there is a little pile of gray crumbs instead of the larger pieces of coal. I just keep adding until I figure it's time to clean them out.
Never had a bead etch before, no more un-reducing problems.
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2008-10-09, 5:40am
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Sheila
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Join Date: Nov 27, 2005
Posts: 1,393
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Quote:
Originally Posted by BonfireBeads
Can I be completely stupid and ask why you put the charcoal in the kiln in the first place? I'm so clueless. |
It creates a reduction environment.
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2008-10-09, 5:48am
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tinkmartin.etsy.com
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Join Date: Jun 10, 2005
Location: Toledo, Ohio
Posts: 7,452
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Quote:
Originally Posted by LoriBird
weird for sure. I've never heard of doing this. I guess ya learn something new everyday |
Tsk! Tsk! We cover this in the Tips and Tricks class. Some kilns have an environment that is higher in O2 than other kilns, and they can effectively de-reduce the finish right off your work. Adding just a pea-sized bit of activated charcoal uses up that extra O2 (layman's explanation, so no one jump on me for scientific accuracy here) and prevents your reduction effects from disappearing.
I like to use it in a more controlled manner than just putting the bit of charcoal in the kiln: A red clay pot or drip dish (the thing that goes UNDER the pot) turned upside down has worked for me. I put any reduced pieces under that along with the charcoal. I do this in an effort to protect my kiln elements.
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2008-10-09, 5:55am
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Does my glass look 2 big?
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Join Date: Jun 21, 2006
Location: San Antonio, Texas
Posts: 613
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Quote:
Originally Posted by Tink
I like to use it in a more controlled manner than just putting the bit of charcoal in the kiln: A red clay pot or drip dish (the thing that goes UNDER the pot) turned upside down has worked for me. I put any reduced pieces under that along with the charcoal. I do this in an effort to protect my kiln elements.
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Tink,
Would these pieces be batch annealed? I just can't figure out how to do this if I am garaging. 
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2008-10-09, 6:02am
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Borovangelist
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Join Date: Jan 26, 2007
Location: Auburn, MA
Posts: 3,002
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doesn't that leave some extra muck in there that'll eventually discolor your glass? Of course I often burn off the carbon soot from my ornaments in the kiln too, so maybe not.
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2008-10-09, 6:05am
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tinkmartin.etsy.com
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Join Date: Jun 10, 2005
Location: Toledo, Ohio
Posts: 7,452
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Quote:
Originally Posted by closer2fine
Tink,
Would these pieces be batch annealed? I just can't figure out how to do this if I am garaging. |
True. At least for me, that is. I suppose you could use a tool or something to lift up the pot or dish and put the piece under it though.
Menty, it burns up completely.
__________________
High-temp, military grade 1/4" hollow mandrels are now available in my Etsy shop!
I have 12" and a limited number of 9" ready to go! BULK PRICING AVAILABLE
Also Available in
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: my Electroforming for Everyone booklet.
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2008-10-09, 6:06am
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Does my glass look 2 big?
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Join Date: Jun 21, 2006
Location: San Antonio, Texas
Posts: 613
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Nothing's happened so far with how I do it (knock on wood) other than my reduced beads not un-reducing.
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2008-10-09, 6:09am
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Does my glass look 2 big?
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Join Date: Jun 21, 2006
Location: San Antonio, Texas
Posts: 613
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Quote:
Originally Posted by Tink
True. At least for me, that is. I suppose you could use a tool or something to lift up the pot or dish and put the piece under it though.
Menty, it burns up completely.
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My bead door is tiny! About 2" tall by 6" wide, the size of a kiln brick. I can barely fit beads in there. Last batch I put in a shelf for worry of a melt down but then I couldn't fit the beads with the bead rack! Just had to double, triple, quadruple.... the kiln floor with kiln wash!
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2008-10-09, 6:56am
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phrit phreak
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Join Date: Nov 18, 2005
Location: in the Loess Hills of Iowa
Posts: 2,045
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Quote:
Originally Posted by Tink
Tsk! Tsk! We cover this in the Tips and Tricks class. Some kilns have an environment that is higher in O2 than other kilns, and they can effectively de-reduce the finish right off your work. Adding just a pea-sized bit of activated charcoal uses up that extra O2 (layman's explanation, so no one jump on me for scientific accuracy here) and prevents your reduction effects from disappearing.
I like to use it in a more controlled manner than just putting the bit of charcoal in the kiln: A red clay pot or drip dish (the thing that goes UNDER the pot) turned upside down has worked for me. I put any reduced pieces under that along with the charcoal. I do this in an effort to protect my kiln elements.
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oppps my B  I have the memory of a goldfish.
I have the memory of a goldfish.
I have the .....bwa ha ha ha Plus i have the bad habit if it's something I'm not gonna do or am interested in...I don't retain it.
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2008-10-09, 10:35am
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boro color bender
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Join Date: Jun 06, 2005
Location: The Oregon coast!
Posts: 10,039
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Now I am just plain creeped out! I went out this morning to get the pieces and was all prepared to buff them up... well... they are glossy again! WTF? Yesterday evening, they were matte as can be. I tried rubbing it off with my shirt and it wouldn't wipe off. They were still warm, but now they look shiny as the morning sun! OMG! I am perplexed! Any idea what happened? I didn't take any drugs and was not drinking last night! I promise.
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"Truth is, everybody is going to hurt you; you just gotta find the ones worth suffering for." -Bob Marley
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2008-10-09, 10:44am
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Spoiled
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Join Date: Sep 05, 2005
Location: Lake WaConDa, NE
Posts: 1,534
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Quote:
Originally Posted by Mr. Smiley
I didn't take any drugs and was not drinking last night! I promise. |
Well there goes my theory.  
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Aimee
"I became insane with long intervals of horrible sanity" Poe
An amazing Cuda with 2 M15's & propane, a Lynx, and a Tondodama torch.
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2008-10-09, 11:49am
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Surrounded by Trouble
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Join Date: Jun 05, 2005
Location: Alabama
Posts: 14,165
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Quote:
Originally Posted by Mr. Smiley
Ok, so this was weird. I've put charcoal in the kiln before and nothing happened to the finish of the beads... well I didn't have coal, so I used some activated carbon. All of the clear glass that wasn't reduced metallic silver glass kind of etched... weirdness I tell ya! The surface is totally matte. I'm not really happy about it, but it's good to know I guess. So if anybody has activated charcoal for the bronze metal clay, you might want to think twice about substituting it for charcoal. |
I know where you can get some high temp burning coal.
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2008-10-09, 12:14pm
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traumaqueen
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Join Date: Jun 27, 2005
Location: Utrecht, a town in The Netherlands, close to amsterdam
Posts: 5,838
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Quote:
Originally Posted by Mr. Smiley
Now I am just plain creeped out! I went out this morning to get the pieces and was all prepared to buff them up... well... they are glossy again! WTF? Yesterday evening, they were matte as can be. I tried rubbing it off with my shirt and it wouldn't wipe off. They were still warm, but now they look shiny as the morning sun! OMG! I am perplexed! Any idea what happened? I didn't take any drugs and was not drinking last night! I promise. |
yeah right. Maybe your glasses were damp dude lol
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2008-10-09, 12:24pm
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I speak Murrini!
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Join Date: Oct 12, 2006
Location: In a Glass House, CA
Posts: 9,170
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Sorry, but that's really funny Brent! I don't know what to say...I think I'm living in a fog most of the time - I'm hoping someone opens my kiln door soon and everything is glossy and clear (what are the chances, though!) I tell ya what would work...hitting the lottery! The world (I think!) would become an absolutely sparkly Oz then...at least for a minute or so, I guess!
Glad it all worked out!
De
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2008-10-09, 1:18pm
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boro color bender
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Join Date: Jun 06, 2005
Location: The Oregon coast!
Posts: 10,039
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Seriously... these were even matte to the touch last night. I wish I had a picture of my face when I saw them today.
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2008-10-09, 1:23pm
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Know-it-all Megalomaniac
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Join Date: Oct 22, 2005
Location: Californication
Posts: 6,282
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Quote:
Originally Posted by Mr. Smiley
Seriously... these were even matte to the touch last night. I wish I had a picture of my face when I saw them today. |
The shiny fairy showed up and fixed your beads.
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2008-10-09, 1:38pm
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Normal is Boring!!
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Join Date: Jan 08, 2006
Location: Utah
Posts: 1,581
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Ha the glass gremlins are at it again! "snickering"
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Antique Brass Findings
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2008-10-09, 5:45pm
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boro color bender
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Join Date: Jun 06, 2005
Location: The Oregon coast!
Posts: 10,039
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Quote:
Originally Posted by Karen Hardy
The shiny fairy showed up and fixed your beads.
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That was SOOOOO nice of her. I planned on wasting a good long while polishing beads I'll never sell today... just because that's how I'm wired.
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"Truth is, everybody is going to hurt you; you just gotta find the ones worth suffering for." -Bob Marley
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2008-10-09, 6:58pm
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Senior Member
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Join Date: Jun 10, 2005
Location: Sacramento Area, CA
Posts: 474
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Quote:
Originally Posted by Mr. Smiley
That was SOOOOO nice of her. I planned on wasting a good long while polishing beads I'll never sell today... just because that's how I'm wired. |
Elephant magic works on soft glass too Brent, didn't you know?
Vanessa
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Vanessa L Hahn
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2008-10-10, 12:32am
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Senior Member
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Join Date: Feb 08, 2006
Location: Palmdale, California
Posts: 7,589
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Darn! I would have loved to see the beads as they were "etched" I still bet they were beautiful!
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Irene
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