Greg Lamont on fri 23 oct 98
Hi Clayarters,
Here's one for the raku folks out there: I've heard of a technique whereby
one may enhance the colors of a piece raku fired with a copper glaze by
brushing on a solution of 10% frit and 90% black copper oxide, then heating
it with a propane torch. Well, I've tried it and all I seem to get is a
dry black matte surface. I've tried different heating times, to no avail.
Is anyone familiar with this technique and, if so, what am I doing wrong?
What's the proper procedure?
TIA for your help,
Greg
Greg Lamont
3011 Northwood Dr.
Ames, Iowa 50010-4750
515/233-3442
gdlamont@iastate.edu
Veena Raghavan on wed 11 nov 98
Did anyone ever respond to Greg's question about enchancing copper flashing
on raku. If so, I missed it and could not find it in the archives. Would
really appreciate it, if anyone who did respond, could repost their answer.
Thanks in advance.
Veena
Veena Raghavan
75124.2520@compuserve.com
Veena Raghavan on wed 9 dec 98
Some time ago, Greg Lamont asked this question:
Here's one for the raku folks out there: I've heard of a technique whereby
one may enhance the colors of a piece raku fired with a copper glaze by
brushing on a solution of 10% frit and 90% black copper oxide, then heating
it with a propane torch. Well, I've tried it and all I seem to get is a
dry black matte surface. I've tried different heating times, to no avail.
Is anyone familiar with this technique and, if so, what am I doing wrong?
What's the proper procedure?
I never did see a reply posted. Is there any possibility that this can be
done?
Would love to know.
Thanks in advance
Veena
Veena Raghavan
75124.2520@compuserve.com
Susan Goldstein on thu 10 dec 98
Veena, there are glazes that respond like this after they are fired, like Post
Pac Man, which was listed in CM some time ago.
Susan
Pat Porter on thu 10 dec 98
Veena:
I have used a propane torch to "re-do" some of my raku. I don't use
anything but a water spray bottle and the bottled gas torches. Usually
takes one ambidexterous person or two people.
Torch small areas at a time. When the desired colors appear, squirt the
area heavily to stop reduction. Continue around the piece as you imagine
how flames would surround the piece. Remember the water!!!!!!! Hope this
helps! I use this on both glossy and matte coppers.
Pat Porter
kitties@pcisys.net
Aurora Colorado
-----Original Message-----
From: Veena Raghavan <75124.2520@compuserve.com>
To: CLAYART@LSV.UKY.EDU
Date: Wednesday, December 09, 1998 10:45 AM
Subject: Enhancing copper flashing on raku
>----------------------------Original message----------------------------
>Some time ago, Greg Lamont asked this question:
>
>Here's one for the raku folks out there: I've heard of a technique whereby
>one may enhance the colors of a piece raku fired with a copper glaze by
>brushing on a solution of 10% frit and 90% black copper oxide, then heating
>it with a propane torch. Well, I've tried it and all I seem to get is a
>dry black matte surface. I've tried different heating times, to no avail.
>Is anyone familiar with this technique and, if so, what am I doing wrong?
>What's the proper procedure?
>
>I never did see a reply posted. Is there any possibility that this can be
>done?
>
>Would love to know.
>Thanks in advance
>Veena
>Veena Raghavan
>75124.2520@compuserve.com
>
Greg Lamont on fri 11 dec 98
At 12:45 PM 12/9/98 EST, you wrote:
>----------------------------Original message----------------------------
>Some time ago, Greg Lamont asked this question:
>
>Here's one for the raku folks out there: I've heard of a technique whereby
>one may enhance the colors of a piece raku fired with a copper glaze by
>brushing on a solution of 10% frit and 90% black copper oxide, then heating
>it with a propane torch. Well, I've tried it and all I seem to get is a
>dry black matte surface. I've tried different heating times, to no avail.
>Is anyone familiar with this technique and, if so, what am I doing wrong?
>What's the proper procedure?
>
>I never did see a reply posted. Is there any possibility that this can be
>done?
>
>Would love to know.
>Thanks in advance
>Veena
>Veena Raghavan
>75124.2520@compuserve.com
Hi Veena,
I never did get a reply, but I tried refiing the piece in question after
applying the 90% black copper oxide/10% frit glaze with a load of bsique to
cone 07. That did the trick! Now I'm able to "paint" with the torch jsut
fine. Over the original Piepenburg Alligator glaze, the effect is just
terrific--a sparkly almost sugar-like rough glaze with greens, golds, blues
and purples. I used a flame spreader on the torch to avoid the polka dot
effect I was getting with the regular tip.
Regards,
Greg
Veena Raghavan on sat 12 dec 98
Greg,
Thanks very much for responding to my post. Interesting, if the
studio where I work is willing, I will try refiring in the bisque kiln with
the added glaze you have mentioned and see what happens. I do not have a
spreader on my torch, but will try one of the suggestions posted, to add
lithium carbonate and then torch it ( I cannot locate my soda ash at the
moment, might have run out of it.)
Will let you know what happens. Delighted that it worked for you.
In fact, one of the problem glazes was the Alligator, worked fine during
some firings, but not in others. So will give this a try.
All my best wishes for the holidays.
Best regards,
Veena
Veena Raghavan
75124.2520@compuserve.com
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