does anyone know how to make a mold and casting of a sculptue?

Question

im trying to make a duplicate of a sculpture and im wondering where to go to learn how to make molds and cast duplicates

any help is appreciated

Answer 1

Mold Making & Casting Workshops provides a start-to-finish hands-on learning experience in creating rubber molds and pouring sculptural casts.You could take a course.
You haven't mentioned where you live so I will just give you the link to the page for the U.S.
Mold Making & Casting courses below;
http://www.infohub.com/vacation_schools/846.html
Casting is a process by which a material is introduced into a mold while it is liquid, allowed to solidify in the shape inside the mold, and then removed producing a fabricated object or part. The finished product is also called a casting. Casting is often used for creating one or more copies of an original piece of sculptural (three-dimensional) artwork. It is also used extensively in the automobile manufacture industry, such as the casting of engine blocks or cylinder heads, or vacuum-forming of plastics and in the lost core process. The process, particularly when performed with molten metals, is also called founding.
Casting may be used to form hot, liquid metals or meltable plastics (called thermoplastics), or various materials that cold set after mixing of components such as certain plastic resins (e.g. epoxy), water setting materials such as concrete or plaster, and materials that become liquid or paste when moist such as clay, which when dry enough to be rigid is removed from the mold, further dried, and fired in a kiln.
Casting may be used to create artistic sculptures.

#Sculpting. An artist creates an original artwork from wax, clay, or another material. Wax and oil-based clay are often preferred because these materials retain their softness.#Mouldmaking. A mould is made of the original sculpture. Most moulds are at least two pieces, and a shim with keys is placed between the two halves during construction so that the mould can be put back together accurately. Most moulds of small sculptures are made from plaster, but can also be made of fiberglass or other materials. To preserve the fine details on the original artwork's surface, there is usually an inner mould made of latex or vinyl, which is supported by the plaster part of the mould. Usually, the original artwork is destroyed during the making and initial deconstruction of the plaster mould. This is because the originals are solid, and do not easily bend as the plaster mould is removed. Often long, thin pieces are cut off of the original and moulded separately. Sometimes, especially in the case of large original (such as life-size) sculptures, many moulds are needed to recreate the original sculpture.#Wax. Once the plaster and latex mould is finished, molten wax is poured into it and swished around until an even coating, usually about 1/4 inches think, covers the entire inner surface of the mould. This may be done in several layers.#Removal of wax. This new, hollow wax copy of the original artwork is removed from the mould.

MORE below on these next sites, they are is also free casting, sculpting,molding etc. Encylopedias, it is full of tons of information for self teaching this medium ;
http://en.allexperts.com/e/c/ca/casting.htm
http://education.yahoo.com/reference/encyclopedia/entry/37710
Fantastic information on this site of wikipedia;
http://en.wikipedia.org/wiki/Special:Search?search=mold+and+casting+sculptures&go=Go
More links and sites for free learning below;
http://www.wikihow.com/Make-a-Life-Cast-Sculpture
http://www.bellaonline.com/articles/art29812.asp
http://www.hirstarts.com/moldmake/moldmaking.html
http://www.florilegium.org/files/CRAFTS/casting-msg.html
http://www.ask.com/web?q=How+to+make+concrete+sculptures%3F&qsrc=0&o=0&l=dir
http://www.ask.com/web?q=instructions+for+mold+and+casting+sculptures&qsrc=0&o=0&l=dir
http://www.google.ca/search?q=instructions+for+mold+and+casting+sculptures&hl=en&start=10&sa=N
http://ca.search.yahoo.com/search?p=Courses+for+mold+and+casting+sculptures&sp=1&fr2=sp-top&ei=UTF-8&fr=ks-ans&fr2=sfp&meta=vc%3D&ei=UTF-8&SpellState=n-705390583_q-7DMjhWS1nO1s4zMGOG1vMAAAAA%40%40
http://www.school-health.org/casting.html
http://www.dickblick.com/zz335/34/
http://www.janfitch.com/castpaper.html
Casting forums;
http://www.sculpture.net/community/archive/index.php/t-1988.html
http://www.sculpture.net/community/printthread.php?t=479
Books about Casting below;
Mold Making, Casting and Patina (Paperback)
by Bruner F. Barrie (Author)

The Prop Builder's Molding & Casting Handbook (Paperback)
by Thurston James (Author)
both available at site below;
http://www.amazon.com/Making-Casting-Patina-Bruner-Barrie/dp/0963186701
You can also go to the Library, it is free and they have great books there for learning this medium.
Hope this helped,
cheers!

Answer 2

Any book on sculpture will discuss making of molds of sculpture. The methods include making a flexible mold from rubber (perhaps backed with plaster for strength) and making a piece mold which is rigid and comes off in sections that must be carefully located on parting lines so undercuts do not occur. If casting is done in metal, life gets more complicated as the mold material must withstand the heat and often has a core to reduce the amount of metal. For modest sized pieces, I prefer making a flexible mold with latex and then making a wax positive which I further work for lost wax casting in investment.

Answer 3

first of all, it depends on what kind of piece you have. If it has no undercuts you can make a waste mold out of plaster - put a release on your piece, make a box or some dam to hold the plaster and pour carefully so as not to get any bubbles once plaster is devoid of water (use a fan) then you can cast anything in it, including glass. If you have undercuts, you can make a 2 or 3 part mold by putting clay where you want your divisions. For each piece let the plaster harden and go to the next piece - don't forget to put a release between them - soap, pam,oil, etc.
If you have a complicated piece, you will have to use polyeurathane or silicone rubber with a mother mold on the outside. I you want to save money, you can use clear silicone window and door sealer caulk found at home depot. You will still have to have a mother mold that can be made out of plaster - no plaster of paris - use molding plaster or hydrocal, plaster of paris is too soft, especially on a big piece.
Been doing it for 35 years

Answer 4

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Answer 5

Find here. There is a video showing how to make a clay sculpture.