marianne kuiper milks on fri 11 nov 05
I think I need a little nervous help with this first
gas firing.
SOS. (maybe??)I'm firing to cone 6, but that probably
doesn't have squat to do wiuth this question.
I just fired the kiln to candle. Carl suggested that I
close the lid all the way, because it is gas and there
is a large hole in the lid, of course. Hope that's
ok-not entirely comfortable with that. Candling for 4
hrs ok? (glaze load. First one. Baby.
So, my question: I have been printing out a chart with
C-F converstions (since my Axner Pyrometer reads only
to F up to 1999, then only C, which is fine. Price was
right!)
But then there is the Cone = temp. printed off the
internet, provided by Axner. So far so good. HOWEVER
it also has two colums with that, one under "180/hour"
and the other under "270/hr." Example:
180 270
2199 2230 (for cone 6)
2228 2273 (^7) etc etc
What does that mean? Does it have to do with the speed
that I fire it at? How do I measure that...simply by
checking how fast it goes up each hour? Keep it there?
I just happened to remember that I've never been part
of the gas fire process, just electric, woodkilns and
raku. And never had to measure it. They didn't trust
me. DON'T LAUGH, I'm very sensitive.
Hope someone hears my cry (in handwringing, excited
anguished delight! Marianne
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
Alex Solla on fri 11 nov 05
Marianne-
Here's a brief answer from someone who has been in your shoes: those cone charts are just that.... charts depicting what temp the cones will bend based on a rate of climb. Not that many of us sit around reading cone charts late at night, but you'll notice that the faster you climb (ie more degrees per hour) the higher the final temp will be before the cone bends. That would be heat work. You arent obligated to even try to maintain the same rate of climb during your firing. That would be nuts. Heck, I have fired kilns where 2 elements died during firing and we still made the cones fall, albeit it took an obscenely long time. Happens. Heat work happens. Sounds like a great t-shirt.
So, no worries eh?
Watch the cones fall. When firing a new kiln always put in multiple conepacks and also add a couple lower melting cones to be safe. I tossed in c1, c3, c4, c5, c6, and c7 when I first started firing to cone5.
Enjoy!
Alex Solla
Cold Springs Studio
4088 Cold Springs Road
Trumansburg, NY 14886
607-387-4042 voice/fax
info@coldspringsstudio.com
www.coldspringsstudio.com
But then there is the Cone = temp. printed off the
internet, provided by Axner. So far so good. HOWEVER
it also has two colums with that, one under "180/hour"
and the other under "270/hr." Example:
180 270
2199 2230 (for cone 6)
2228 2273 (^7) etc etc
What does that mean? Does it have to do with the speed
that I fire it at? How do I measure that...simply by
checking how fast it goes up each hour? Keep it there?
Marianne
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.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.
---------------------------------
Yahoo! FareChase - Search multiple travel sites in one click.
marianne kuiper milks on mon 14 nov 05
Hi Alex,
Thank you for that information and advice. It really
is complicated when you do it by yourself for the
first time. When you watch a class firing it's all
simple: "ahah...hmmm.sure!...really? cool!-(jotting
things down..knowing look to other classmate)..wow!.."
and you think you understand. But you never get to
fire by yourself so yes: another problem pottering
maniac is born. Long live the
clay/chemical/wheel/tools/slabroller/extruder
companies and may they have a long, order-filling
life!
It makes (truly!) more sense to me now and I will
enjoy my LESSER failures at next times' firing!
Thanks - have a really fine day. Marianne
--- Alex Solla wrote:
> Marianne-
>
> Here's a brief answer from someone who has been in
> your shoes: those cone charts are just that....
> charts depicting what temp the cones will bend based
> on a rate of climb. Not that many of us sit around
> reading cone charts late at night, but you'll notice
> that the faster you climb (ie more degrees per hour)
> the higher the final temp will be before the cone
> bends. That would be heat work. You arent obligated
> to even try to maintain the same rate of climb
> during your firing. That would be nuts. Heck, I have
> fired kilns where 2 elements died during firing and
> we still made the cones fall, albeit it took an
> obscenely long time. Happens. Heat work happens.
> Sounds like a great t-shirt.
>
> So, no worries eh?
> Watch the cones fall. When firing a new kiln always
> put in multiple conepacks and also add a couple
> lower melting cones to be safe. I tossed in c1, c3,
> c4, c5, c6, and c7 when I first started firing to
> cone5.
>
> Enjoy!
>
> Alex Solla
>
> Cold Springs Studio
> 4088 Cold Springs Road
> Trumansburg, NY 14886
>
> 607-387-4042 voice/fax
> info@coldspringsstudio.com
> www.coldspringsstudio.com
>
>
>
>
>
> But then there is the Cone = temp. printed off the
> internet, provided by Axner. So far so good. HOWEVER
> it also has two colums with that, one under
> "180/hour"
> and the other under "270/hr." Example:
> 180 270
>
> 2199 2230 (for cone 6)
> 2228 2273 (^7) etc etc
> What does that mean? Does it have to do with the
> speed
> that I fire it at? How do I measure that...simply by
> checking how fast it goes up each hour? Keep it
> there?
>
> Marianne
>
>
>
> __________________________________
> Yahoo! FareChase: Search multiple travel sites in
> one click.
> http://farechase.yahoo.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.
>
>
>
> ---------------------------------
> Yahoo! FareChase - Search multiple travel sites in
> one click.
>
>
______________________________________________________________________________
> 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.
>
__________________________________
Start your day with Yahoo! - Make it your home page!
http://www.yahoo.com/r/hs
| |
|
