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#1 Saoirse

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Posted 13 June 2013 - 12:46 PM

I am not sure how to program my kiln to do this kind of schedule for a crystal glaze...can anyone who knows explain it? Also can I firinf other pieces in this firing or only the crystal glazes?


Segment

Rate

Temp.

Hold

1

250°/hour

1250°F

0

2

350°/hour

2140°F

0

3

25°/hour

2165°F

0

4

9999 setting

1950°F

3 hrs.



Would appreciate any help with this confusing glaze firing schedule.

#2 trina

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Posted 13 June 2013 - 12:53 PM

what glaze are you using? Sounds too cool for a cystaline glaze, or does you glaze just have little bits of glass in it? T

#3 Saoirse

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Posted 13 June 2013 - 01:36 PM

what glaze are you using? Sounds too cool for a cystaline glaze, or does you glaze just have little bits of glass in it? T


They are Laguna crystalline glazes cone 6.

#4 trina

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Posted 13 June 2013 - 03:07 PM

Sorry I have no experience with those glazes. Is the firing schedule you describe from Laguna? If so I would give it a try. T

#5 Chris Campbell

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Posted 13 June 2013 - 04:01 PM

Do you have a computer control?
If so, this is fairly simple to program in on a custom type of schedule. You should have basic directions in your manual.

If you do not have a computer ... I would volunteer that it looks like a standard Cone 5 firing with 3 hrs of controlled cooling.
Anyone know how to do controlled cooling without a computer???

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#6 Diane Puckett

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Posted 13 June 2013 - 04:07 PM

Your kiln manual should explain how to enter a firing program. I find it helpful to write out exactly what I must enter before actually programming the kiln. If you don't have a manual, you should be able to download one from the manufacturer's website.

I assume you know how crystalline glazes run and how to deal with that. Bill Schran has a great website which includes this PDF about using crystalline glazes. Cone6Crystals.pdf
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#7 oldlady

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Posted 13 June 2013 - 09:25 PM

you have signed in as a newbie. if you are really new, you should know that you might be talking about one of two completely different things. if you bought a jar of a glaze with the word crystalline in its name and it says fire to a particular cone number, do that. contact the manufacturer of the glaze for answers. you may not need to slow cool.

if you are really new it is unlikely that you are trying to produce a truly crystalline glaze, the kind that requires very careful monitoring and a slow cooling and a "spare" at the bottom to catch the runoff that will occur. so some of the previous posts will not apply depending on what it is you plan to achieve. look at the website for Pottery Boys to see their crystalline glazes to see if that is what you are attempting. if so, you need much more instruction.

i suspect you are in the first category. good luck.
"putting you down does not raise me up."

#8 Saoirse

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Posted 13 June 2013 - 10:12 PM

Do you have a computer control?
If so, this is fairly simple to program in on a custom type of schedule. You should have basic directions in your manual.

If you do not have a computer ... I would volunteer that it looks like a standard Cone 5 firing with 3 hrs of controlled cooling.
Anyone know how to do controlled cooling without a computer???


Hi thanks for the info...that helps. I will look for the manual...I'm sure it's here somewhere. My kiln is a Skutt digital computerized and I have never really tried anything but the usual 04, 06, 5 and cone 6 firings with a short hold at the end...I guess, it's maybe not as complicated as it looks.

If it a normal cone 5 setting with controlled cooling, can I fire other glazes along with the crystalline glazes? Would the controlled cooling bother the other glazes?

I appreciate the help. Thank you very much!

#9 Saoirse

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Posted 13 June 2013 - 10:17 PM

Your kiln manual should explain how to enter a firing program. I find it helpful to write out exactly what I must enter before actually programming the kiln. If you don't have a manual, you should be able to download one from the manufacturer's website.

I assume you know how crystalline glazes run and how to deal with that. Bill Schran has a great website which includes this PDF about using crystalline glazes. Cone6Crystals.pdf


Thanks...I have fired with this glaze before and found out the hard way that it runs...I guess I didn't believe the container warning. :-)
I'm off to hunt for my manual!

#10 Saoirse

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Posted 13 June 2013 - 10:19 PM

Sorry I have no experience with those glazes. Is the firing schedule you describe from Laguna? If so I would give it a try. T


Thanks for your help...I think I'm on the right track now...many thanks.

#11 Saoirse

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Posted 13 June 2013 - 10:30 PM

you have signed in as a newbie. if you are really new, you should know that you might be talking about one of two completely different things. if you bought a jar of a glaze with the word crystalline in its name and it says fire to a particular cone number, do that. contact the manufacturer of the glaze for answers. you may not need to slow cool.

if you are really new it is unlikely that you are trying to produce a truly crystalline glaze, the kind that requires very careful monitoring and a slow cooling and a "spare" at the bottom to catch the runoff that will occur. so some of the previous posts will not apply depending on what it is you plan to achieve. look at the website for Pottery Boys to see their crystalline glazes to see if that is what you are attempting. if so, you need much more instruction.

i suspect you are in the first category. good luck.


The answer is yes and no...I am a tile painter going potter...having been making tiles and painting them for 20 years or so, I have now bought a wheel and am doing some pots and stuff. The painter in me wants to experiment...a lot!

The glazes are Laguna crystalline glazes cone 6...which I accidently bought without realizing they needed special cooling. Anyway, I am learning some new things about the kiln and the glazes so it's all good. The firing schedule that comes with the glazes looks complicated...but, it is because I don't usually understand manuals, hence, I don't usually read them. I do have one and I shall have a look.
Thank you for the help...much appreciated!

#12 oldlady

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Posted 13 June 2013 - 11:04 PM

ah, that makes sense. i have fired with slow cooling in the past trying to achieve tiny crystals in a particular glaze. stepped down and slower cooling did nothing bad to the other pots in the kiln at the same time. think about it, for those other pots, they are just staying warm longer than if fired outside on a very cold day in alaska. what's the harm?

tell us how it works out.
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#13 oldlady

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Posted 13 June 2013 - 11:07 PM

hey, somebody, maybe you, do you know the article in Ceramics Monthly from a few, 6-8 years ago about crystals forming in slow cooled glazes?
"putting you down does not raise me up."

#14 oldlady

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Posted 14 June 2013 - 01:41 PM

someone posted the very article i just mentioned. it can be found on page 4 of the post about Steven Hill's firing schedule for bisque. go figure.
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#15 Saoirse

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Posted 17 June 2013 - 02:51 PM

someone posted the very article i just mentioned. it can be found on page 4 of the post about Steven Hill's firing schedule for bisque. go figure.


Thank you, I'll check it out...I appreciate all the good info.




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