Stephani Stephenson on fri 14 jan 00
Hello All
I've been slipcasting some original sculptural pieces. Fairly complex,
lidded, with some detailed textured surfaces. My molds , slip, and the
the overall casting process is going very well.
I've consulted all of my resource material and I'm finding little or
no information on how to make a 'master'. The master is, from my
understanding, a plaster original/mold combo. It differs from a
'mother mold". I have seen examples of masters for simple two part
molds . The master allows you to remake broken or deteriorating molds
with out having to redo an original. In my moldmaking experience I
learned about originals, mother molds, waste molds and piece molds, but
nothing about masters.
I would like to learn more about how and when to make the master . I am
generally working with 5 -6 piece molds.
I would greatly appreciate any tips on process or materials , or
suggestions of a good reference book or web site on this topic.
Stephani Stephenson
mudmistress@earthlink.com
John Rodgers on sat 15 jan 00
Stephani,
If you are serious about learning to build master molds and master the
intracacies of building a block and case, you must get a copy of "Moldmaking
for Ceramics" by Donald Frith. It is the definitive book on moldmaking.
Axner sells it, as well as others. It's available through Amazon.com and
others. Originally out in hardback for $70, the current edition is out in
paperback, cost about $30/35 as I recall. It comes with a shrinkage
calculator card and a batch calculator for mixing plasters and cements.
In addition, and equally as important as Frith's book, is a good reference
to working with rubber molding compounds. For this I recommend you go to the
website for Ploytek Development Corporation.
http://www.polytek.com/
Order a copy of their catalog. It is a really good reference in itself, and
will give you much information about rubber molding compounds.
You will want to be able to build a block-and-case from all cement,
cement-and-rubber combination, and all rubber. Each has it's own unique
application.
If you have any questions or if I can be of assistance, feel free to e-mail
me off list.
John Rodgers
Birmingham, AL
Stephani Stephenson wrote:
> ----------------------------Original message----------------------------
> Hello All
> I've been slipcasting some original sculptural pieces. Fairly complex,
> lidded, with some detailed textured surfaces. My molds , slip, and the
> the overall casting process is going very well.
> I've consulted all of my resource material and I'm finding little or
> no information on how to make a 'master'. The master is, from my
> understanding, a plaster original/mold combo. It differs from a
> 'mother mold". I have seen examples of masters for simple two part
> molds . The master allows you to remake broken or deteriorating molds
> with out having to redo an original. In my moldmaking experience I
> learned about originals, mother molds, waste molds and piece molds, but
> nothing about masters.
> I would like to learn more about how and when to make the master . I am
> generally working with 5 -6 piece molds.
> I would greatly appreciate any tips on process or materials , or
> suggestions of a good reference book or web site on this topic.
>
> Stephani Stephenson
> mudmistress@earthlink.com
Tony Hansen on wed 19 jan 00
There are hundreds of ceramic books available at Axner OnLine.
Just search for 'mold, molds, plaster'. There are a number of really
good mold making books.
====================================================
T o n y H a n s e n thansen@digitalfire.com
Don't fight the dragon alone http://digitalfire.com
Calculation/Database Software for Ceramic Industry
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