Mark Strayer on sat 21 aug 04
It looks like my bad experiences with Specturm glaze might be a very sim=
ple
beginner mistake! I haven't been firing my bisque on SLOW, instead I have=
been using medium speed. Dave and everyone at Brakers today were so helpf=
ul...I
learned a lot. I also was given a lesson on how to use Orton Cones which=
I plan to use in my very next firing. Dave thought that my changing bisq=
ue
speed will solve all my problems. I'll let you know how the next load tu=
rns
out.
>-- Original Message --
>Date: Sat, 21 Aug 2004 09:26:46 -0400
>Reply-To: Clayart
>From: Mark Strayer
>Subject: Re: Cone 6 glazes computer controlled vs. kiln sitter kiln=
>To: CLAYART@LSV.CERAMICS.ORG
>
>
>I sat down last night and studied which of my spectrum glazes seem to ha=
ve
>this problem of bubbling @ cone 6. The list is shorter than I thought.
> I am placing these in two groups (1)really bad bubbling (2)Minor Bubbli=
ng
>Bad:
>Textured Oasis
>Textured Kiwi
>Textured Moonscape
>
>Minor:
>Textured Iron
>Textured Cascade
>Textured Bronze
>***Not sure what it means, but they ALL are in this "Textured"catagory
of
>glaze.
>
>I also have noticed that Textured Cascade runs really bad on the interio=
r
>of pieces at cone 6...pooling at the bottom.
>
>I'm taking a few of my pieces up to Brackers this morning for some exper=
t
>opions and I will let everyone know what I find out.
>-M
>
>>-- Original Message --
>>Date: Fri, 20 Aug 2004 20:15:27 -0400
>>Reply-To: artist@donnanicosia.com
>>From: Donna Nicosia
>>Subject: Re: Cone 6 glazes computer controlled vs. kiln sitter kil=
n
>>To: CLAYART@LSV.CERAMICS.ORG
>>
>>
>>Hi, I'm new to clayart and really enjoy reading and learning. I've used=
>>spectrum glazes at cone 6 and haven't had any problems with it. Turns
>>out like it should. I have an old used Evenheat kiln, computer kind, an=
d
>>yes, the temp. rate does slow down the last couple of hours. I also hav=
e
>>an old used kiln sitter kiln, Evenheat also, and I get the same results=
>>with the both of them so I don't know what the answer is. Maybe it has
>>something to do with different colors as I've only used a small
>>selection of colors. Sorry I can't be of help. Donna
>>
>>-----Original Message-----
>>From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Cynthia
>>Bracker
>>Sent: Thursday, August 19, 2004 3:10 PM
>>To: CLAYART@LSV.CERAMICS.ORG
>>Subject: Cone 6 glazes computer controlled vs. kiln sitter kiln
>>
>>I have been looking into the problems that Mark Strayer has been having=
>>with his spectrum glazes at Cone 6. Something recently struck me and
I
>>wanted some other opinions. I had noticed a while back that the
>>standard computer programs on Skutt and L&L kilns (others as well, I'm
>>sure) will DECREASE the rate of climb for the last hour or two of a
>>firing. I am told this is to achieve better glaze success. Typically
>>in a Kiln Sitter kiln, the switches are all on high and the elements ar=
e
>>on at full power for the last part of the firing, and controlling the
>>rate of temperature climb is not really possible. So my questions are:=
>>1. Could the reduced temperature at the end of the firing help solve
>>problems like Mark described (Severe blistering not likely the result
of
>>improper bisque firing, application etc.) as well as problems like
>>pinholing, crazing etc. that also seem to have no apparent cause (or at=
>>least no typical cause)
>>2. If so, could one try to achieve this same speed reduction in a manua=
l
>>kiln by turning the switches down to medium at say 2000deg Farenheit.
or
>>through some other method?
>>Thanks
>>Cindy Bracker
>>
>>_______________________________________________________________________=
_
>>______
>>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@pcl=
ink.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@pcli=
nk.com.
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