Arnold Howard on fri 16 jul 99
I was wondering if anyone on this list has fired raku in an electric
kiln (without adding gas burners--just a standard kiln).
What were your results?
Thanks,
Arnold Howard
Paragon Industries, Inc.
_________________________________________________________
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Get your free @yahoo.com address at http://mail.yahoo.com
Jere Lykins on sat 17 jul 99
Arnold,
I actually prefer to fire Raku in an electric kiln.
You can really control the preheat, heat rise, and
the final maturing point of the glazes... even use
a cone in the kiln-sitter and just "catch it"
when it clicks off... then take the pots out and do post-fire
reduction. You can also place several pots in the kiln and
take them out one by one to post-fire them... keeping the
elements on to keep the remaining pots hot in the meantime.
SAFETY requires that the elements be turned OFF while reaching into
the kiln with those metal tongs. 240 volts CAN kill. Even so,
with DRY kevlar gloves and rubber-soled shoes on while standing
on a dry surface, it is unlikely that one would get shocked.
I find that the reduction effects I like all happen in the
post-fire process, not in the kiln during heating. In fact, sometimes
when a gas kiln is reducing too much during the up-cycle, there can
be an undesirable dirtying of glazes, especially with copper.
Just my experience and opinion, but if given the choice, I'd choose
electric... quiet...predictable...(doesn't sound like Raku) :)
Jere Lykins
Associate Professor of Art
Coordinator, Art Department
Director of Study Abroad in Italy
Berry College
Mt. Berry, GA 30149
Office 706-290-2692
Fax 706-238-7835
----------
>From: Automatic digest processor
>To: Recipients of CLAYART digests
>Subject: CLAYART Digest - 15 Jul 1999 to 16 Jul 1999 (#1999-46)
>Date: Sat, Jul 17, 1999, 4:01 AM
>
>Firing raku in electric kilns
Burtt on sat 17 jul 99
Hi Arnold,
I do all my raku firing in my electric kiln and it works well. It
takes about an hour and a half to come up to temperature on the first
firing and then about 30 minutes for firings in a hot kiln. My kiln is
in my garage, so I can easily go straight from the kiln into a reduction
can. I get a nice flame up inside the garage, but I haven't caught the
house on fire yet.
Good luck.
Steve Burtt
Ocean Springs, MississippiArnold Howard wrote:
>
> ----------------------------Original message----------------------------
> I was wondering if anyone on this list has fired raku in an electric
> kiln (without adding gas burners--just a standard kiln).
>
> What were your results?
>
> Thanks,
>
> Arnold Howard
> Paragon Industries, Inc.
> _________________________________________________________
> Do You Yahoo!?
> Get your free @yahoo.com address at http://mail.yahoo.com
millie carpenter on sat 17 jul 99
Arnold
the ceramics teacher, in a high school that I worked in 2 years ago, fired
raku in an electric kiln at least twice a week. she would use posts &
shelves to build up to an area that she could reach into. load it, start
it and at 2:15 PM she and a few of the ceramics aids would pull the circuit
breaker, one student would raise the lid. with raku tongs she would pull a
piece, put it in a waiting bucket with a few leaves, another student would
slam a lid on it to trap the smoke and then run with the bucket to the
venting area near the clay mixer, this would be repeated until all the
pieces were out. then they would fill a deep sink with water. one student
would uncap the bucket, the teacher would pull the piece with the tongs,
and into the water with it. these kids did some incredible work.
Marcia Jestadt, from the torpedo factory, in alexandria gave a workshop for
the annapolis potters guild a few years ago. she also fires electric
raku, does the same thing with her large tiles, except she drops a wet
towel or blanket over the bucket and simply sets them to the side, she
doesn't do the water bath.
I keep saying that I am going to do this, and probably the next time my
husband is away fishing I will, I am very careful about doing anything that
will set the smoke alarm off with him around because I dropped a clean up
tool in a kiln. and decided to go to the grocery store while it was taking
time to come up to temp. one little tool produced enough smoke to set the
thing off, and according to my husband, he had to vent "massive clouds of
black smoke" from the basement
> Millie in Md. getting ready for the weekend. crabs and corn in Md yum
> ----------------------------Original message----------------------------
> I was wondering if anyone on this list has fired raku in an electric
> kiln (without adding gas burners--just a standard kiln).
>
> What were your results?
>
> Thanks,
>
> Arnold Howard
> Paragon Industries, Inc.
> _________________________________________________________
> Do You Yahoo!?
> Get your free @yahoo.com address at http://mail.yahoo.com
Ben Shelton on sat 17 jul 99
I've done this extensively and had awesome results. I reduce with alcohol
and get very little smoke for copper matte flashing. The benefits are, more
even heating of the pot, use of existing kiln(in most cases) and you can do
it in a weel ventilated garage. Good luck.
BTW I made a counterweight for the lid of my kiln so it would stay open when
raised and could shut easily by lifting the weight. Ben
-
Julia M. Townsend on sun 18 jul 99
just how are you using the alcohol reducing??? could you please explain this?
Julie
Ben Shelton wrote:
> ----------------------------Original message----------------------------
> I've done this extensively and had awesome results. I reduce with alcohol
> and get very little smoke for copper matte flashing. The benefits are, more
> even heating of the pot, use of existing kiln(in most cases) and you can do
> it in a weel ventilated garage. Good luck.
>
> BTW I made a counterweight for the lid of my kiln so it would stay open when
> raised and could shut easily by lifting the weight. Ben
>
> -
Susan Goldstein on sun 18 jul 99
In a message dated 7/17/99 2:35:30 PM Eastern Daylight Time,
Bmshelton@uky.campuscwix.net writes:
<< I reduce with alcohol
and get very little smoke for copper matte flashing. >>
Ben, what type of alcohol? How do you apply it? What recipe do you use for
your copper matte?
Susan
Heidrun Schmid on sun 18 jul 99
ARNOLD; I only have an electric kiln to do my Raku. I have good results from
this, the reduction is done in a bin filled with dry leaves, the pots come
out nicely blackened where unglazed. My electric kiln is a top loader,
fairly small and so it is easy to do this. The maturing of the glazes does
not depend on gas or electric heat, it is the reduction after the melt that
makes the westernized Raku special, isn't it? Heidrun
Arnold Howard wrote:
> ----------------------------Original message----------------------------
> I was wondering if anyone on this list has fired raku in an electric
> kiln (without adding gas burners--just a standard kiln).
>
> What were your results?
>
> Thanks,
>
> Arnold Howard
> Paragon Industries, Inc.
> _________________________________________________________
> Do You Yahoo!?
> Get your free @yahoo.com address at http://mail.yahoo.com
Burtt on sun 18 jul 99
Hi Ben,
I also fire raku in an electric kiln, but have never heard of
reducing with alcohol. Can you be more specific about how you do this?
My wife would appreciate any method that reduces the smoke.
Steve Burtt
Ocean Springs, Mississippi
Ben Shelton wrote:
>
> ----------------------------Original message----------------------------
> I've done this extensively and had awesome results. I reduce with alcohol
> and get very little smoke for copper matte flashing. The benefits are, more
> even heating of the pot, use of existing kiln(in most cases) and you can do
> it in a weel ventilated garage. Good luck.
>
> BTW I made a counterweight for the lid of my kiln so it would stay open when
> raised and could shut easily by lifting the weight. Ben
>
> -
Faye Clarke on sun 18 jul 99
Yes, I fire in an electric kiln... a small 11" Dutch kiln... at least do
the ititial heating to 1750 degrees F. We have the lid set up on a pulley
system so one can step on a pedal and lift the lid to remove the pieces out
to the metal containers just outside the door.... certainly not the best
set up but until a more traditional one is set up outside this has worked
well-- be it only for small pieces.... it has served me well and brought
home many $$$$.
Faye on Vancouver Island where summer and the tourists have both arrived....
Blessings are abundant....
t 11:26 AM 7/16/99 EDT, you wrote:
>----------------------------Original message----------------------------
>I was wondering if anyone on this list has fired raku in an electric
>kiln (without adding gas burners--just a standard kiln).
>
>What were your results?
>
>Thanks,
>
>Arnold Howard
>Paragon Industries, Inc.
>_________________________________________________________
>Do You Yahoo!?
>Get your free @yahoo.com address at http://mail.yahoo.com
>
>
Ben Shelton on mon 19 jul 99
Well, the process goes like this...
Pull the pot(from the kiln)
Apply 85% rubbing alcohol with a garden sprayer(you'll have to buy some 90%
and 75% and mix it)
Be sure to get a garden sprayer with a metal wand/spray tip.
You'll see the copper flash to pure copper color, then fade to black as the
alcohol burns off.
repeat process until the magenta color band is visible running across the
pot and is slowing down as it fades to black.
Place pot in reduction chanber with about one page of newspaper to sit
on(folded up )
wait(you'll have to time this and it will depend on the size, shape and
thickness of you pot)
Burp (the pot, not you. You have to re-oxidize at this point to get the
copper pot to turn back to the magenta, blue, green, black) Don't let in too
much oxygen or the whole thing will be ruined(refire)
If the colors don't come, you've waited too long. If the colors don't stay,
you've not waited long enough.
I've used several glazes but any with about 75-85% copper (ox or carb) and
some frit to stick it to the pot will do.
You will also have to experiment with the proper firing temp for the glaze.
if the final product rubs off, it wasn't hot enough. If it begins to shine,
It was too hot.
Any questions???
Bye now, Ben
-----Original Message-----
From: Susan Goldstein
To: CLAYART@LSV.UKY.EDU
Date: Sunday, July 18, 1999 1:50 PM
Subject: Re: Firing raku in electric kilns
>----------------------------Original message----------------------------
>In a message dated 7/17/99 2:35:30 PM Eastern Daylight Time,
>Bmshelton@uky.campuscwix.net writes:
>
><< I reduce with alcohol
> and get very little smoke for copper matte flashing. >>
>
>Ben, what type of alcohol? How do you apply it? What recipe do you use
for
>your copper matte?
>
>Susan
>
CNW on mon 19 jul 99
Doesn't this alcohol reduction thing remind anyone else of the recent post
where a young woman was severely burned?
Celia in NC
cwike@conninc.com
Cindy Cabrera on mon 19 jul 99
I was wondering if you fire raku on the electric kiln,
would you do one firing? I was told that after a fire
section you need to let the kiln cool down in order to
turn it on again. Can turning on and off without
letting the kiln cool down will eventually harm the
kiln? Thanks
Cindy
--- Heidrun Schmid wrote:
> ----------------------------Original
> message----------------------------
> ARNOLD; I only have an electric kiln to do my Raku.
> I have good results from
> this, the reduction is done in a bin filled with dry
> leaves, the pots come
> out nicely blackened where unglazed. My electric
> kiln is a top loader,
> fairly small and so it is easy to do this. The
> maturing of the glazes does
> not depend on gas or electric heat, it is the
> reduction after the melt that
> makes the westernized Raku special, isn't it?
> Heidrun
>
> Arnold Howard wrote:
>
> > ----------------------------Original
> message----------------------------
> > I was wondering if anyone on this list has fired
> raku in an electric
> > kiln (without adding gas burners--just a standard
> kiln).
> >
> > What were your results?
> >
> > Thanks,
> >
> > Arnold Howard
> > Paragon Industries, Inc.
> >
>
_________________________________________________________
> > Do You Yahoo!?
> > Get your free @yahoo.com address at
> http://mail.yahoo.com
>
===
Cindy Cabrera
San Juan, Puerto Rico
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
Kelley Webb Randel on tue 20 jul 99
--
Yes! Thank you! Have we ever got an explanation as to
how it (alcohol) is used in the process? I keep
imagining the fumes exploding . . .
> ----------------------------Original message----------------------------
> Doesn't this alcohol reduction thing remind anyone else of the recent post
> where a young woman was severely burned?
>
> Celia in NC
> cwike@conninc.com
Heidrun Schmid on tue 20 jul 99
------------------
Cindy, I am not so sure about that. But I do Raku about twice a year, so I
think it is o.k. for my kiln. When I do the raku I program my kiln (it is
electrinically controlled) to a temperature 100 =B0C higher than the one
needed to melt the glaze. After taking out the pieces and putting in new
pieces my kiln goes on firing. Temperature drop after this depends on length
of time it all took to take out and put in the pots. It ususally takes about
30 minutes for the next load to come up to temp. After Raku I usually do
some bisque firings. My kiln elements are finished after about 100 -120
mixed firings: bisque 960=B0C and glaze cone 6 ( programmed to 1200=B0C and
soaking time 20-30 min). If I do no Raku firing, lifetime of elements is the
same ( I only started Raku firings 5 years ago).
Heidrun
Cindy Cabrera wrote:
=3E ----------------------------Original message----------------------------
=3E I was wondering if you fire raku on the electric kiln,
=3E would you do one firing? I was told that after a fire
=3E section you need to let the kiln cool down in order to
=3E turn it on again. Can turning on and off without
=3E letting the kiln cool down will eventually harm the
=3E kiln? Thanks
=3E Cindy
=3E
=3E --- Heidrun Schmid =3Chmschmid=40samart.co.th=3E wrote:
=3E =3E ----------------------------Original
=3E =3E message----------------------------
=3E =3E ARNOLD=3B I only have an electric kiln to do my Raku.
=3E =3E I have good results from
=3E =3E this, the reduction is done in a bin filled with dry
=3E =3E leaves, the pots come
=3E =3E out nicely blackened where unglazed. My electric
=3E =3E kiln is a top loader,
=3E =3E fairly small and so it is easy to do this. The
=3E =3E maturing of the glazes does
=3E =3E not depend on gas or electric heat, it is the
=3E =3E reduction after the melt that
=3E =3E makes the westernized Raku special, isn't it?
=3E =3E Heidrun
=3E =3E
=3E =3E Arnold Howard wrote:
=3E =3E
=3E =3E =3E ----------------------------Original
=3E =3E message----------------------------
=3E =3E =3E I was wondering if anyone on this list has fired
=3E =3E raku in an electric
=3E =3E =3E kiln (without adding gas burners--just a standard
=3E =3E kiln).
=3E =3E =3E
=3E =3E =3E What were your results?
=3E =3E =3E
=3E =3E =3E Thanks,
=3E =3E =3E
=3E =3E =3E Arnold Howard
=3E =3E =3E Paragon Industries, Inc.
=3E =3E =3E
=3E =3E
=3E =
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F==
5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5=
F=5F=5F=5F=5F=5F=5F
=3E =3E =3E Do You Yahoo=21?
=3E =3E =3E Get your free =40yahoo.com address at
=3E =3E http://mail.yahoo.com
=3E =3E
=3E
=3E =3D=3D=3D
=3E Cindy Cabrera
=3E San Juan, Puerto Rico
=3E
=3E =
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F==
5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5=
F=5F=5F=5F=5F=5F=5F
=3E Do You Yahoo=21?
=3E Get your free =40yahoo.com address at http://mail.yahoo.com
Faye Clarke on tue 20 jul 99
One firing after your initial bisque fire... Yes...It is the reduction
outside in buckets that give you the color.. As to letting the kiln cool
down... no, I do not do that.... just keep on firing a new load... but only
put the prewarmed new pieces in after the kiln is down to just under 1500
F -- find I lose less product that way...
We have been firing for 6 years this way and only replaced the elements
once... that it is harder on it than traditional firing... probably
somewhat... but when that is what you have to use... be creative... we have
and find we get some pretty incredible pieces
Faye on Vancouver Island.... warm and fruitful days... strawberries
finished for the first time and Raspberries, cream and fresh homemade bread
make for decadent living...
At 01:37 PM 7/19/99 EDT, you wrote:
>----------------------------Original message----------------------------
>I was wondering if you fire raku on the electric kiln,
>would you do one firing? I was told that after a fire
>section you need to let the kiln cool down in order to
>turn it on again. Can turning on and off without
>letting the kiln cool down will eventually harm the
>kiln? Thanks
>Cindy
>
>--- Heidrun Schmid wrote:
>> ----------------------------Original
>> message----------------------------
>> ARNOLD; I only have an electric kiln to do my Raku.
>> I have good results from
>> this, the reduction is done in a bin filled with dry
>> leaves, the pots come
>> out nicely blackened where unglazed. My electric
>> kiln is a top loader,
>> fairly small and so it is easy to do this. The
>> maturing of the glazes does
>> not depend on gas or electric heat, it is the
>> reduction after the melt that
>> makes the westernized Raku special, isn't it?
>> Heidrun
>>
>> Arnold Howard wrote:
>>
>> > ----------------------------Original
>> message----------------------------
>> > I was wondering if anyone on this list has fired
>> raku in an electric
>> > kiln (without adding gas burners--just a standard
>> kiln).
>> >
>> > What were your results?
>> >
>> > Thanks,
>> >
>> > Arnold Howard
>> > Paragon Industries, Inc.
>> >
>>
>_________________________________________________________
>> > Do You Yahoo!?
>> > Get your free @yahoo.com address at
>> http://mail.yahoo.com
>>
>
>===
>Cindy Cabrera
>San Juan, Puerto Rico
>
>_________________________________________________________
>Do You Yahoo!?
>Get your free @yahoo.com address at http://mail.yahoo.com
>
>
Fran Schwartz on thu 22 jul 99
Hi, This may be apparent to all, but do you do an actual glaze firing? On
low,medium and high, or some other way to melt the glaze? Thanks, Fran
Ben Shelton on thu 22 jul 99
No explosions, it burns right away, on contact.
-----Original Message-----
From: Kelley Webb Randel
To: CLAYART@LSV.UKY.EDU
Date: Tuesday, July 20, 1999 10:25 AM
Subject: Re: Firing raku in electric kilns
----------------------------Original message----------------------------
--
Yes! Thank you! Have we ever got an explanation as to
how it (alcohol) is used in the process? I keep
imagining the fumes exploding . . .
> ----------------------------Original message----------------------------
> Doesn't this alcohol reduction thing remind anyone else of the recent post
> where a young woman was severely burned?
>
> Celia in NC
> cwike@conninc.com
| |
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