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crystalline firing and kilns (apm elements)

updated fri 16 may 03

 

Arnold Howard on wed 14 may 03


I believe anyone doing cone 10 electric firing, especially crystalline
glazes, would benefit from having APM heating elements. They are made of
Kanthal wire and use powdered metal technolgy. The metal is sintered to
make it more dense and last longer.

APM elements are probably available from the manufacturer of your kiln.

If anyone on Clayart is using APM elements, I would be interested in
hearing what you think of them.

Sincerely,

Arnold Howard
Paragon Industries, L.P.
www.paragonweb.com




From: Fara Shimbo
> On the subject of crystalline firings and kilns, here are
> my thoughts and observations over the last nine years.
> Feel free to thoroughly trash them...
>
> In my electric kilns, I get about 20-30 firings to ^9,
> with or without ITC. The only difference I've noticed
> in whether I use ITC or not is that when I change the
> elements, the ITC ones can be rolled up and put back in
> their original bags. The problem with crystalline firing
> is, I think, the long soak periods for growing the
> crystals. Because of this, in my view, each crystalline
> fire can be considered one and a half normal fires. I was
> told by one of the salesmen at the local Laguna place
> (before it closed) that you can only expect about 40 ^9 ^10
> firings out of a set of elements in any case; so twenty-five
> firings gives you just about those 40 firings you would normally
> expect.
>
> I've only once changed elements because of an element
> breaking. It broke at a spot where something exploded and
> glaze melted onto it. I change elements mostly because
> the last hundred degrees C is going too slowly and I'm not
> getting crystals. I'm sure the elements I take out are
> just fine for any other kind of firing.
>
> My major problem with elements is that changing them is a
> task so mind-numbing and aggravating that it's right up there
> with root canals amongst things I'd rather not do. It's also
> very expensive -- I was spending about US$600 a year for
> new elements.

Ellie Blair on wed 14 may 03


Hi Arnold,
Thanks for the response. After knowing what to look for I found in my
manual that the Skutt 1027 KM has APM elements. I know that when I bought
my kiln my ceramic dealer knew that I was going to fire crystalline and made
sure I had the elements I needed to do the job. Will the APM elements last
any longer?
Ellie B


----- Original Message -----
From: "Arnold Howard"
To:
Sent: Wednesday, May 14, 2003 11:59 AM
Subject: Re: Crystalline Firing and Kilns (APM elements)


> I believe anyone doing cone 10 electric firing, especially crystalline
> glazes, would benefit from having APM heating elements. They are made of
> Kanthal wire and use powdered metal technolgy. The metal is sintered to
> make it more dense and last longer.
>
> APM elements are probably available from the manufacturer of your kiln.
>
> If anyone on Clayart is using APM elements, I would be interested in
> hearing what you think of them.
>
> Sincerely,
>
> Arnold Howard
> Paragon Industries, L.P.
> www.paragonweb.com
>
>
>
>
> From: Fara Shimbo
> > On the subject of crystalline firings and kilns, here are
> > my thoughts and observations over the last nine years.
> > Feel free to thoroughly trash them...
> >
> > In my electric kilns, I get about 20-30 firings to ^9,
> > with or without ITC. The only difference I've noticed
> > in whether I use ITC or not is that when I change the
> > elements, the ITC ones can be rolled up and put back in
> > their original bags. The problem with crystalline firing
> > is, I think, the long soak periods for growing the
> > crystals. Because of this, in my view, each crystalline
> > fire can be considered one and a half normal fires. I was
> > told by one of the salesmen at the local Laguna place
> > (before it closed) that you can only expect about 40 ^9 ^10
> > firings out of a set of elements in any case; so twenty-five
> > firings gives you just about those 40 firings you would normally
> > expect.
> >
> > I've only once changed elements because of an element
> > breaking. It broke at a spot where something exploded and
> > glaze melted onto it. I change elements mostly because
> > the last hundred degrees C is going too slowly and I'm not
> > getting crystals. I'm sure the elements I take out are
> > just fine for any other kind of firing.
> >
> > My major problem with elements is that changing them is a
> > task so mind-numbing and aggravating that it's right up there
> > with root canals amongst things I'd rather not do. It's also
> > very expensive -- I was spending about US$600 a year for
> > new elements.
>
>
____________________________________________________________________________
__
> 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.
>

Ilene Mahler on wed 14 may 03


Are those the ones that are $92 each..Ilene in Conn
----- Original Message -----
From: "Arnold Howard"
To:
Sent: Wednesday, May 14, 2003 12:59 PM
Subject: Re: Crystalline Firing and Kilns (APM elements)


> I believe anyone doing cone 10 electric firing, especially crystalline
> glazes, would benefit from having APM heating elements. They are made of
> Kanthal wire and use powdered metal technolgy. The metal is sintered to
> make it more dense and last longer.
>
> APM elements are probably available from the manufacturer of your kiln.
>
> If anyone on Clayart is using APM elements, I would be interested in
> hearing what you think of them.
>
> Sincerely,
>
> Arnold Howard
> Paragon Industries, L.P.
> www.paragonweb.com
>
>
>
>
> From: Fara Shimbo
> > On the subject of crystalline firings and kilns, here are
> > my thoughts and observations over the last nine years.
> > Feel free to thoroughly trash them...
> >
> > In my electric kilns, I get about 20-30 firings to ^9,
> > with or without ITC. The only difference I've noticed
> > in whether I use ITC or not is that when I change the
> > elements, the ITC ones can be rolled up and put back in
> > their original bags. The problem with crystalline firing
> > is, I think, the long soak periods for growing the
> > crystals. Because of this, in my view, each crystalline
> > fire can be considered one and a half normal fires. I was
> > told by one of the salesmen at the local Laguna place
> > (before it closed) that you can only expect about 40 ^9 ^10
> > firings out of a set of elements in any case; so twenty-five
> > firings gives you just about those 40 firings you would normally
> > expect.
> >
> > I've only once changed elements because of an element
> > breaking. It broke at a spot where something exploded and
> > glaze melted onto it. I change elements mostly because
> > the last hundred degrees C is going too slowly and I'm not
> > getting crystals. I'm sure the elements I take out are
> > just fine for any other kind of firing.
> >
> > My major problem with elements is that changing them is a
> > task so mind-numbing and aggravating that it's right up there
> > with root canals amongst things I'd rather not do. It's also
> > very expensive -- I was spending about US$600 a year for
> > new elements.
>
>
____________________________________________________________________________
__
> 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.

Ellie Blair on thu 15 may 03


Ilene,
I don't know. I know I just made sure that my kiln had the necessary
elements to do the job. They came installed in the kiln. I believe that it
is standard in all of the electric cone 10 kilns from Skutt.
Ellie


----- Original Message -----
From: "Ilene Mahler"
To:
Sent: Wednesday, May 14, 2003 3:51 PM
Subject: Re: Crystalline Firing and Kilns (APM elements)


> Are those the ones that are $92 each..Ilene in Conn
> ----- Original Message -----
> From: "Arnold Howard"
> To:
> Sent: Wednesday, May 14, 2003 12:59 PM
> Subject: Re: Crystalline Firing and Kilns (APM elements)
>
>
> > I believe anyone doing cone 10 electric firing, especially crystalline
> > glazes, would benefit from having APM heating elements. They are made of
> > Kanthal wire and use powdered metal technolgy. The metal is sintered to
> > make it more dense and last longer.
> >
> > APM elements are probably available from the manufacturer of your kiln.
> >
> > If anyone on Clayart is using APM elements, I would be interested in
> > hearing what you think of them.
> >
> > Sincerely,
> >
> > Arnold Howard
> > Paragon Industries, L.P.
> > www.paragonweb.com
> >
> >
> >
> >
> > From: Fara Shimbo
> > > On the subject of crystalline firings and kilns, here are
> > > my thoughts and observations over the last nine years.
> > > Feel free to thoroughly trash them...
> > >
> > > In my electric kilns, I get about 20-30 firings to ^9,
> > > with or without ITC. The only difference I've noticed
> > > in whether I use ITC or not is that when I change the
> > > elements, the ITC ones can be rolled up and put back in
> > > their original bags. The problem with crystalline firing
> > > is, I think, the long soak periods for growing the
> > > crystals. Because of this, in my view, each crystalline
> > > fire can be considered one and a half normal fires. I was
> > > told by one of the salesmen at the local Laguna place
> > > (before it closed) that you can only expect about 40 ^9 ^10
> > > firings out of a set of elements in any case; so twenty-five
> > > firings gives you just about those 40 firings you would normally
> > > expect.
> > >
> > > I've only once changed elements because of an element
> > > breaking. It broke at a spot where something exploded and
> > > glaze melted onto it. I change elements mostly because
> > > the last hundred degrees C is going too slowly and I'm not
> > > getting crystals. I'm sure the elements I take out are
> > > just fine for any other kind of firing.
> > >
> > > My major problem with elements is that changing them is a
> > > task so mind-numbing and aggravating that it's right up there
> > > with root canals amongst things I'd rather not do. It's also
> > > very expensive -- I was spending about US$600 a year for
> > > new elements.
> >
> >
>
____________________________________________________________________________
> __
> > 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.
>

Arnold Howard on thu 15 may 03


APM elements are three times the cost of standard elements. $92 is
probably correct.

Sincerely,

Arnold Howard
Paragon Industries, L.P.
www.paragonweb.com


From: Ilene Mahler

> Are those the ones that are $92 each..Ilene in Conn

> From: "Arnold Howard"
> > I believe anyone doing cone 10 electric firing, especially
crystalline
> > glazes, would benefit from having APM heating elements. They are
made of
> > Kanthal wire and use powdered metal technolgy. The metal is
sintered to
> > make it more dense and last longer.

Arnold Howard on thu 15 may 03


Yes, APM elements last considerably longer than standard elements. I
don't know how much longer. A rough guess would be three times.

Sincerely,

Arnold Howard
Paragon Industries, L.P.
www.paragonweb.com



From: Ellie Blair

> Hi Arnold,
> Thanks for the response. After knowing what to look for I found in my
> manual that the Skutt 1027 KM has APM elements. I know that when I
bought
> my kiln my ceramic dealer knew that I was going to fire crystalline
and made
> sure I had the elements I needed to do the job. Will the APM elements
last
> any longer?
> Ellie B

Ellie Blair on thu 15 may 03


Thanks for the info.
Ellie


----- Original Message -----
From: "Arnold Howard"
To:
Sent: Thursday, May 15, 2003 1:53 PM
Subject: Re: Crystalline Firing and Kilns (APM elements)


> Yes, APM elements last considerably longer than standard elements. I
> don't know how much longer. A rough guess would be three times.
>
> Sincerely,
>
> Arnold Howard
> Paragon Industries, L.P.
> www.paragonweb.com
>
>
>
> From: Ellie Blair
>
> > Hi Arnold,
> > Thanks for the response. After knowing what to look for I found in my
> > manual that the Skutt 1027 KM has APM elements. I know that when I
> bought
> > my kiln my ceramic dealer knew that I was going to fire crystalline
> and made
> > sure I had the elements I needed to do the job. Will the APM elements
> last
> > any longer?
> > Ellie B
>
>
____________________________________________________________________________
__
> 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.
>