Edouard Bastarache Inc. on tue 7 dec 04
Hello all,
Orton :
C/10 1285C or 2345 F (60 C/hour)
C/12 1306 C or 2383 F (60 C/hour)
Seger :
C/10 1300 C or 2372 F
according to Smart on :
http://perso.wanadoo.fr/smart2000/cones%20Orton.htm
http://perso.wanadoo.fr/smart2000/cones%20de%20seger.htm
Hoping this info. will help,
"Ils sont fous ces quebecois"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker
Sorel-Tracy
Quebec
edouardb@sorel-tracy.qc.ca
www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://perso.wanadoo.fr/smart2000/index.htm
http://www.digitalfire.com/education/toxicity/
Has anyone on the list had any experience using both Seger and Orton cones?
I'm looking for what would be the closest equivalent to Seger cone 10 in
the
Orton cone range. I've looked at several different sources, in Japanese and
English, and they vary wildly. In one source, The two cone 10s are roughly
equivalent (using a chart that doesn't list degree/hour info). In another
source, depending on the degrees/hour, they appear to be nearly 2 cones
different.
As for my situation, I fire to Seger 10. The last 100 degrees of my firing
takes about 3.5 hours (roughly 1200 - 1300C), and I end up with a bent
Seger
10, tip just touching the shelf. According to one source, this would be the
eqivalent of Orton cone 12, given the same firing schedule.
The reason I ask is that Seger cones here in Japan cost about USD 23 for a
box of 10. I just checked Axner, and the Ortons look about USD 8 for a box
of 50! So I'd like to do some research and testing and start using Orton,
just because they are so much cheaper.
Thanks for any help anyone can offer,
Mike
Mike Martino on tue 7 dec 04
Has anyone on the list had any experience using both Seger and Orton cones?
I'm looking for what would be the closest equivalent to Seger cone 10 in the
Orton cone range. I've looked at several different sources, in Japanese and
English, and they vary wildly. In one source, The two cone 10s are roughly
equivalent (using a chart that doesn't list degree/hour info). In another
source, depending on the degrees/hour, they appear to be nearly 2 cones
different.
As for my situation, I fire to Seger 10. The last 100 degrees of my firing
takes about 3.5 hours (roughly 1200 - 1300C), and I end up with a bent Seger
10, tip just touching the shelf. According to one source, this would be the
eqivalent of Orton cone 12, given the same firing schedule.
The reason I ask is that Seger cones here in Japan cost about USD 23 for a
box of 10. I just checked Axner, and the Ortons look about USD 8 for a box
of 50! So I'd like to do some research and testing and start using Orton,
just because they are so much cheaper.
Thanks for any help anyone can offer,
Mike
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
mike martino
in taku, japan
muchimi@potteryofjapan.com
www.potteryofjapan.com
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Ivor and Olive Lewis on wed 8 dec 04
Dear Mike Martino
For your Seger Cones, may I suggest you get in touch with Pottery
Crafts Ltd who cater for export orders. I can vouch for their service
but I do not have their current price lists.
Contact;
Potterycrafts Limited,
Campbell Road,
Stoke on Trent,
ST4 4ET,
England.
Ask for their current catalogues and Export Price lists. They may have
a Web site now.
Best regards,
Ivor Lewis.
Redhill,
S. Australia.
Leonard Smith on wed 8 dec 04
For many years only Harrison cones were available in Australia and all our
earlier firing formulation was based on them. From my knowledge Harrison and
Seger cones are based on very similar formulae and are close in standards.
When I changed over to Orton cones I did many tests and Cone 8 Harrison
would touch its toes at about the same time as cone 10 Orton.
We now fire our glazes to about cone 11 Orton to get the same result we used
to get with cone 10 half way down. So its my guess that Orton 12 would be
close.
Hope that helps
Leonard Smith
Rosedale Street Gallery
2A Rosedale Street
Dulwich Hill NSW Australia 2203
Email: Leonard@rosedalestreetgallery.com
http://www.rosedalestreetgallery.com
> Has anyone on the list had any experience using both Seger and Orton cones?
> I'm looking for what would be the closest equivalent to Seger cone 10 in the
> Orton cone range. I've looked at several different sources, in Japanese and
> English, and they vary wildly. In one source, The two cone 10s are roughly
> equivalent (using a chart that doesn't list degree/hour info). In another
> source, depending on the degrees/hour, they appear to be nearly 2 cones
> different.
>
> As for my situation, I fire to Seger 10. The last 100 degrees of my firing
> takes about 3.5 hours (roughly 1200 - 1300C), and I end up with a bent Seger
> 10, tip just touching the shelf. According to one source, this would be the
> eqivalent of Orton cone 12, given the same firing schedule.
>
> The reason I ask is that Seger cones here in Japan cost about USD 23 for a
> box of 10. I just checked Axner, and the Ortons look about USD 8 for a box
> of 50! So I'd like to do some research and testing and start using Orton,
> just because they are so much cheaper.
>
> Thanks for any help anyone can offer,
>
> Mike
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> mike martino
> in taku, japan
>
> muchimi@potteryofjapan.com
> www.potteryofjapan.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.
Mike Martino on sun 12 dec 04
Thanks to everyone who piped in on my cone comparison question.
Sounds like 2 cones difference is the place to start testing. Tried
Potterycrafts website but
unfortunately they are only selling Orton Cones and Harrison Minibars
currently.
Thank you very much,
Mike
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
mike martino
in taku, japan
muchimi@potteryofjapan.com
www.potteryofjapan.com
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
|
