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precious metal clays

updated fri 6 sep 02

 

Betty M. Burroughs on wed 28 aug 02


Evan,
$27. US translates to about $42. Can at today's exchange rate. We only =
used the silver PMC and the PMC+ Paper sheet.
There are 3 kinds of PMC: =20

PMC which "has the best working properties and remains moist a bit =
longer than the others", according to the Rio Grande Co. brochure (this =
is probably why we started with this kind). It is the most porous.

PMC+: "the metal particles in this version are shaped differently and =
have less binder". Shrinkage rate is less but it is slightly stiffer to =
work with and dries faster when exposed to the air.=20

PMC3: Easy to work with, 10-15% shrinkage but costs a bit more. It is =
the most dense.

You can also get PMC+ in a paper sheet which can be used to create =
drapery-like effects or folded like a fan or cut into strips for weaving =
or braiding.=20

>------------Original Message---------
>Date: Sat, 24 Aug 2002 20:17:56 -0400
>From: Evan Clifford
>Subject: Re: Precious Metal Clay

>Did you guys use silver PMC? Go to
>http://pmcconnection.com/mcart/index.cgi?code=3D3&cat=3D2. They have 20 =
gram
>silver PMC for $27.00. It only has a shrinkage or 8-10% and fires in =
10
>min... Check it out.
>-Evan

>>-----Original Message-----
>>From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG] =
On
>>Behalf Of Betty M. Burroughs
>>Sent: Friday, August 23, 2002 1:04 PM
>>To: CLAYART@LSV.CERAMICS.ORG
>>Subject: Re: Precious Metal Clay

>>I took a course in PMC (Precious Metal Clay) at Red Deer College in
>>Alberta this summer. PMC is very finely-ground silver (or gold or
>>platinum) powder held together with an organic binder. It looks like
>>clay and you can work it like clay. It dries out quickly so you need =
to
>>keep it well wrapped in Saran. It comes in 1-ounce boxes (about the =
size
>>of a robin's egg) and we paid $39. Can. for that amount. Our teacher
>>said that was a very good price! Gold and platinum are much more.

>>It is fired quickly to 1650 deg. F and held there for 2 hours. Then =
the
>>kiln was shut off and the lid opened so it could be cooled quickly. At
>>this stage the result is 99.9% fine silver but it is covered in a =
white
>>substance. Burnishing with stainless steel tools brings out the shiny
>>silver or you can put small pieces in a rock tumbler with stainless
>>steel shot and a tiny amount of non-sudsing soap for a couple of hours
>>and voila! shiny silver pieces!

>>We were surprised to find that everything shrinks about 33%. This must
>>be taken into consideration when using with clay. Also, the firing =
temp.
>>for PMC is like any metal lustre...Cone 17 to 19.

>>It was easy to use .....I made jewellry pieces......but awfully
>>expensive. It is a new product so maybe in time the price will come
>>down.

Rebecca P on wed 28 aug 02



Hello,


I've been following the PMC e-mails with interest.  They have sparked an idea but I don't know if it works. I know you can paint gold onto a finished piece then low fire it (cone 018?).  What I am wondering is if you can wrap sterling silver wire on your finished piece and fire it at a low temp? If so - what temp?  And, by the way, what is the temp for firing glass to the melting point?  Full of questions!  Thanks for your help.


Rebecc Pierre


Oak Island, NC



>From: "Betty M. Burroughs"
>Reply-To: Ceramic Arts Discussion List
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Precious Metal Clays
>Date: Wed, 28 Aug 2002 11:16:57 -0700
>
>Evan,
>$27. US translates to about $42. Can at today's exchange rate. We only used the silver PMC and the PMC+ Paper sheet.
>There are 3 kinds of PMC:
>
>PMC which "has the best working properties and remains moist a bit longer than the others", according to the Rio Grande Co. brochure (this is probably why we started with this kind). It is the most porous.
>
>PMC+: "the metal particles in this version are shaped differently and have less binder". Shrinkage rate is less but it is slightly stiffer to work with and dries faster when exposed to the air.
>
>PMC3: Easy to work with, 10-15% shrinkage but costs a bit more. It is the most dense.
>
>You can also get PMC+ in a paper sheet which can be used to create drapery-like effects or folded like a fan or cut into strips for weaving or braiding.
>
> >------------Original Message---------
> >Date: Sat, 24 Aug 2002 20:17:56 -0400
> >From: Evan Clifford
> >Subject: Re: Precious Metal Clay
>
> >Did you guys use silver PMC? Go to
> >http://pmcconnection.com/mcart/index.cgi?code=3&cat=2. They have 20 gram
> >silver PMC for $27.00. It only has a shrinkage or 8-10% and fires in 10
> >min... Check it out.
> >-Evan
>
> >>-----Original Message-----
> >>From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG] On
> >>Behalf Of Betty M. Burroughs
> >>Sent: Friday, August 23, 2002 1:04 PM
> >>To: CLAYART@LSV.CERAMICS.ORG
> >>Subject: Re: Precious Metal Clay
>
> >>I took a course in PMC (Precious Metal Clay) at Red Deer College in
> >>Alberta this summer. PMC is very finely-ground silver (or gold or
> >>platinum) powder held together with an organic binder. It looks like
> >>clay and you can work it like clay. It dries out quickly so you need to
> >>keep it well wrapped in Saran. It comes in 1-ounce boxes (about the size
> >>of a robin's egg) and we paid $39. Can. for that amount. Our teacher
> >>said that was a very good price! Gold and platinum are much more.
>
> >>It is fired quickly to 1650 deg. F and held there for 2 hours. Then the
> >>kiln was shut off and the lid opened so it could be cooled quickly. At
> >>this stage the result is 99.9% fine silver but it is covered in a white
> >>substance. Burnishing with stainless steel tools brings out the shiny
> >>silver or you can put small pieces in a rock tumbler with stainless
> >>steel shot and a tiny amount of non-sudsing soap for a couple of hours
> >>and voila! shiny silver pieces!
>
> >>We were surprised to find that everything shrinks about 33%. This must
> >>be taken into consideration when using with clay. Also, the firing temp.
> >>for PMC is like any metal lustre...Cone 17 to 19.
>
> >>It was easy to use .....I made jewellry pieces......but awfully
> >>expensive. It is a new product so maybe in time the price will come
> >>down.
>
>______________________________________________________________________________
>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.


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Evan Clifford on wed 28 aug 02


Sorry about that! My mistake.
-Evan

-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG] On
Behalf Of Betty M. Burroughs
Sent: Wednesday, August 28, 2002 2:17 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Precious Metal Clays

Evan,
$27. US translates to about $42. Can at today's exchange rate. We only
used the silver PMC and the PMC+ Paper sheet.
There are 3 kinds of PMC:

PMC which "has the best working properties and remains moist a bit
longer than the others", according to the Rio Grande Co. brochure (this
is probably why we started with this kind). It is the most porous.

PMC+: "the metal particles in this version are shaped differently and
have less binder". Shrinkage rate is less but it is slightly stiffer to
work with and dries faster when exposed to the air.

PMC3: Easy to work with, 10-15% shrinkage but costs a bit more. It is
the most dense.

You can also get PMC+ in a paper sheet which can be used to create
drapery-like effects or folded like a fan or cut into strips for weaving
or braiding.

>------------Original Message---------
>Date: Sat, 24 Aug 2002 20:17:56 -0400
>From: Evan Clifford
>Subject: Re: Precious Metal Clay

>Did you guys use silver PMC? Go to
>http://pmcconnection.com/mcart/index.cgi?code=3&cat=2. They have 20
gram
>silver PMC for $27.00. It only has a shrinkage or 8-10% and fires in
10
>min... Check it out.
>-Evan

>>-----Original Message-----
>>From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]
On
>>Behalf Of Betty M. Burroughs
>>Sent: Friday, August 23, 2002 1:04 PM
>>To: CLAYART@LSV.CERAMICS.ORG
>>Subject: Re: Precious Metal Clay

>>I took a course in PMC (Precious Metal Clay) at Red Deer College in
>>Alberta this summer. PMC is very finely-ground silver (or gold or
>>platinum) powder held together with an organic binder. It looks like
>>clay and you can work it like clay. It dries out quickly so you need
to
>>keep it well wrapped in Saran. It comes in 1-ounce boxes (about the
size
>>of a robin's egg) and we paid $39. Can. for that amount. Our teacher
>>said that was a very good price! Gold and platinum are much more.

>>It is fired quickly to 1650 deg. F and held there for 2 hours. Then
the
>>kiln was shut off and the lid opened so it could be cooled quickly. At
>>this stage the result is 99.9% fine silver but it is covered in a
white
>>substance. Burnishing with stainless steel tools brings out the shiny
>>silver or you can put small pieces in a rock tumbler with stainless
>>steel shot and a tiny amount of non-sudsing soap for a couple of hours
>>and voila! shiny silver pieces!

>>We were surprised to find that everything shrinks about 33%. This must
>>be taken into consideration when using with clay. Also, the firing
temp.
>>for PMC is like any metal lustre...Cone 17 to 19.

>>It was easy to use .....I made jewellry pieces......but awfully
>>expensive. It is a new product so maybe in time the price will come
>>down.

________________________________________________________________________
______
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.

iandol on thu 29 aug 02


With Fine Silver Bullion standing at less than US$ 5.00 per Troy Onz =
this sound like a good little earner...for the manufacturer. You would =
only pay about US$6.00/Troy onz for Sterling sheet and wire.

Best regards,

Ivor.

Brant Palley NMCLAY.com on sat 31 aug 02


You can't fashion objects out of silver bullion or sheet with just your
fingers; as we do with clay turning to ceramic, this clay fires to silver.

I think it is fascinating.

Brant

www.Art-Clay.com www.Silver-Clay.com

Snail Scott on mon 2 sep 02


At 03:24 AM 9/1/02 +0930, you wrote:
>From descriptions of how PMC is used, the lost wax casting process seems
much better...


A point at which PMC becomes a useful replacement
(or supplement) for cast metal is when forms are
created which need to be hollow (like beads) or
which would be difficult to sprue (due to surface
detail or other concerns).

-Snail

Russel Fouts on thu 5 sep 02


> From descriptions of how PMC is used, the lost wax casting process seems
much better... <

The PMC work I've enjoyed the most is that which takes advantage of the
material for it's own merits. Makes the most of it's own unique
qualities and limits.

Something we love about clay is the direct hand to material contact.
Imagine, this is metal that can be worked like clay with out any tools
at all.

Imagine a ring that's simply a hand made coil, complete with the
artist's fingerprints and all. You can't do that as easily with normal
metal.

Russel
--

Russel Fouts
Mes Potes & Mes Pots
Brussels, Belgium
Tel: +32 2 223 02 75
Mobile: +32 476 55 38 75
Http://www.mypots.com
http://www.Japan-Net.ne.jp/~iwcat

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