Lizacat29@AOL.COM on mon 15 jan 01
I was just reading about a demonstration Steve Branfman did in Hawaii in the
newest "Ceramics Monthly" . He used small glass fragments imbedded in clay
cylinders. When he raku fired, he glazed over with clear crackle which made
the glass run. This fascinates me and I'm going to try it. Just thought I'd
ask if anyone has more information or tips. The article talks about a 3 hour
firing, but no temps. I'm assuming that glass must melt at around 1800 along
with the clear crackle? It also mentions using small fragments so they don't
pop out, I wonder how small and also if the clay body is special in any way
or just regular raku clay.
Jerome Heck on mon 15 jan 01
Check the Hawaii Craftsmen web site for this information.
http://www.hawaiicraftsmen.org/ go to the section called Tutorials under the
Navigation link for a pictorial version of Steve's demonstration.
http://www.hawaiicraftsmen.org/SiteAreas/ArtMedia/BranfmanTutorial.htm
Jerome Heck
potsfromheck@hawaii.rr.com
Lizacat29@AOL.COM wrote:
> I was just reading about a demonstration Steve Branfman did in Hawaii in the
> newest "Ceramics Monthly" . He used small glass fragments imbedded in clay
> cylinders. When he raku fired, he glazed over with clear crackle which made
> the glass run. This fascinates me and I'm going to try it. Just thought I'd
> ask if anyone has more information or tips. The article talks about a 3 hour
> firing, but no temps. I'm assuming that glass must melt at around 1800 along
> with the clear crackle? It also mentions using small fragments so they don't
> pop out, I wonder how small and also if the clay body is special in any way
> or just regular raku clay.
debkaplan3 on tue 16 jan 01
Wow is this site cool. Steve has done it again. What beautiful work &
what wonderful step by step pictures on the site. How did he get the gig in
Hawaii (other than he's a brilliant potter)? I'm sooo envious.
Debbie
-----Original Message-----
Subject: Re: Glass in raku
Check the Hawaii Craftsmen web site for this information.
http://www.hawaiicraftsmen.org/ go to the section called Tutorials under
the
Navigation link for a pictorial version of Steve's demonstration.
http://www.hawaiicraftsmen.org/SiteAreas/ArtMedia/BranfmanTutorial.htm
Jerome Heck
potsfromheck@hawaii.rr.com
Lizacat29@AOL.COM wrote:
> I was just reading about a demonstration Steve Branfman did in Hawaii in
the
> newest "Ceramics Monthly" . He used small glass fragments imbedded in clay
> cylinders. When he raku fired, he glazed over with clear crackle which
made
> the glass run.
SusanRaku@AOL.COM on tue 16 jan 01
I tried to open the site but was not successful.. any suggestions?
Susan
Ababi Sharon on wed 17 jan 01
http://www.hawaiicraftsmen.org/SiteAreas/ArtMedia/BranfmanTutorial.htmhttp:/
/www.hawaiicraftsmen.org/SiteAreas/ArtMedia/BranfmanTutorial.htm
----- Original Message -----
From:
To:
Sent: Wednesday, January 17, 2001 12:58 AM
Subject: Re: Glass in raku
> I tried to open the site but was not successful.. any suggestions?
>
> Susan
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
debkaplan3 on wed 17 jan 01
Hi Susan
You could try http://www.hawaiicraftsmen.org
-click on People (at top of page)
-click on Guest Artists
-click on Steven Branfman
Good Luck
Debbie
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]On
Behalf Of SusanRaku@AOL.COM
Sent: Tuesday, January 16, 2001 5:59 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Glass in raku
I tried to open the site but was not successful.. any suggestions?
Susan
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
SusanRaku@AOL.COM on wed 17 jan 01
In a message dated 01/17/2001 11:51:53 AM Eastern Standard Time,
Dechlin@CONNIX.COM writes:
<< http://www.hawaiicraftsmen.org >>
Thank you!
SusanRaku@AOL.COM on wed 17 jan 01
In a message dated 01/17/2001 11:51:53 AM Eastern Standard Time,
Dechlin@CONNIX.COM writes:
<< http://www.hawaiicraftsmen.org >>
just tried the above and it didn't work either.
Susan
Diane G. Echlin on thu 18 jan 01
delete everything after the .org\ and it will get you into the main
site.
Diane in CT
Ababi Sharon wrote:
>
> http://www.hawaiicraftsmen.org/SiteAreas/ArtMedia/BranfmanTutorial.htmhttp:/
> /www.hawaiicraftsmen.org/SiteAreas/ArtMedia/BranfmanTutorial.htm
>
> ----- Original Message -----
> From:
> To:
> Sent: Wednesday, January 17, 2001 12:58 AM
> Subject: Re: Glass in raku
>
> > I tried to open the site but was not successful.. any suggestions?
> >
> > Susan
> >
> >
> ____________________________________________________________________________
> __
> > Send postings to clayart@lsv.ceramics.org
> >
> > You may look at the archives for the list or change your subscription
> > settings from http://www.ceramics.org/clayart/
> >
> > Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
Marta Matray Gloviczki on thu 18 jan 01
susan,
i also had problems to get that website, the server
was down or something, keep trying, it`s worth the
effort: http://www.hawaiicraftsmen.org
good luck,
marta
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Jean Stephenson on thu 18 jan 01
I just tried it; on one piece the glass flowed nicely, the other, a wide =
bottomed bottle shape, the glass didn't really melt all that much. I =
refired it and it broke in the reduction chamber. Back to the drawing =
board!
Next time I'd like to use a variety of glass colors and see what =
happens. If anyone else has tried it please let us know your results. =
Thanks. Jean
ferenc jakab on fri 19 jan 01
I just tried it; on one piece the glass flowed nicely, the other, a wide
bottomed bottle shape, the glass didn't really melt all that much. I
refired it and it broke in the reduction chamber
Just a thought, Glass blowers and cold glass artist always stress the need
to appropriately anneal glass during production. this usually means a "fire
down" of 6 - 12 hours. It seems to me that raku fired glass would not be
sufficiently annealed and could pose a danger with particles exploding off
in time. I've seen improperly annealed glass explode up to two years later.
What sort of glass is being used in this process?
Feri
Jean Stephenson on fri 19 jan 01
I used crushed up glass from flat marble type shapes usually used as
decorative glass in fountains, planters, etc. I did fire slowly, between 2
to 2 1/2 hours, not the 6 to 12 you mention.
----- Original Message -----
From: "ferenc jakab"
To:
Sent: Thursday, January 18, 2001 11:40 PM
Subject: Re: glass in raku
> Just a thought, Glass blowers and cold glass artist always stress the need
> to appropriately anneal glass during production. this usually means a
"fire
> down" of 6 - 12 hours. It seems to me that raku fired glass would not be
> sufficiently annealed and could pose a danger with particles exploding off
> in time. I've seen improperly annealed glass explode up to two years
later.
> What sort of glass is being used in this process?
> Feri
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Steven Branfman on sat 20 jan 01
Friends,
It's me, the Glass Man. Feri Jakab posted the following:
<to appropriately anneal glass during production. this usually means a "fire
down" of 6 - 12 hours. It seems to me that raku fired glass would not be
sufficiently annealed and could pose a danger with particles exploding off in
time. I've seen improperly annealed glass explode up to two years later.>>
Well Feric, you're getting a little too.........how shall I
say..................technical? over the glass thing. When you melt glass
pieces in a kiln, raku or other temperature, you are way beyond the technical
limitations of the glass blower. The melted glass will not, ever, explode off
the piece. Well, I shouldn't say never but how's 15 years for testimony?
Steven Branfman
The Potters Shop
31 Thorpe Rd.
Needham MA 02494, USA
781 449 7687
fax: 781 449 9098
ferenc jakab on sat 20 jan 01
> I used crushed up glass from flat marble type shapes usually used as
> decorative glass in fountains, planters, etc. I did fire slowly, between
2
> to 2 1/2 hours, not the 6 to 12 you mention.
Jean I'm talking about a process which is like a fire DOWN or long cooling
process. If you know any glass blowers ask their opinion.
Feri.
ferenc jakab on sun 21 jan 01
> Well Feric, you're getting a little too.........how shall I
> say..................technical? over the glass thing. When you melt glass
> pieces in a kiln, raku or other temperature, you are way beyond the
technical
> limitations of the glass blower. The melted glass will not, ever, explode
off
> the piece. Well, I shouldn't say never but how's 15 years for testimony?
Steve,
I readily admit I am operating on limited knowledge, but I was under the
impression that if glass is re-melted it loses its annealed strength.
Slumped glass artists always re-anneal their glass pieces for this reason. I
am prepared to accept the wisdom of greater experience, but could you please
expand on your reasoning. I would not see this as such a problem if the
glass was in normal kin fired pieces where the slow rate of cooling is
similar to the annealing process but RAKU is a very fast cooling process. I
am not wishing to be alarmist but I have raised the question in the hope
that some one with superior knowledge can explain WHY we should not be
concerned with this process in Raku. Incidentally I recently witnessed a
bowl which had been fired with cullet in an electric kiln which cools over
rapidly, shedding pieces of glass all over the Gallery.
Feri.
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