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					               Sculpture
 Sculpture is three-dimensional artwork created by
shaping or combining hard materials, typically stone
  such as marble, metal, glass, or wood, or plastic
materials such as clay, textiles, polymers and softer
   metals. The term has been extended to works
           including sound, text and light.
                        Relief
• A relief is a sculptured artwork where a modelled form is
  raised—or, in a sunken-relief, lowered—from a plane
  from which the main elements of the composition project
  (or sink).
              In the round
• Sculpture "in the round" refers to free-
  standing sculpture that is meant to be
  viewed on all sides, and is surrounded
  entirely by space.
               Sculptures
• Two main forms of sculpture are relief and
  free-standing (in the round)
• Both, can be modeled or carved
                  Modeling
• an additive process using soft materials such as
  plaster, clay or wax.
• Since the materials are not very durable, they
  are usually cast in a more lasting medium;
  anything that can be poured including molten
  metal, cement, even plastic.
• Modeling encourages open forms with the aid of
  metal armatures to support their extension into
  space.
                                                     Clay
            an armature is a framework around which the sculpture is built




Working With Clay
Clay may be modeled, sculpted, or thrown. Let’s look at each method:
•    Modeling – by piecing together smaller units of clay, or by coiling clay, artists can create figures, pottery and art
     ceramics. Any type of clay can be modeled.
•    Sculpting – by using special tools and their hands, artists can create figures, busts, doll heads, miniatures, etc
     from a lump of stiff hardening or non-hardening clay.
•    Throwing – using a potter’s wheel, an artist can form a lump of clay into round-shaped pottery and art ceramics,
     such as bowls, vases, cups, plates, etc. Only hardening clay specifically designed for the wheel will work for this.
•    Any of these techniques can be combined. For example: and artist may sculpt the body of a thrown vase to
     create a filigree pattern along the rim. Or an artist may sculpt a head, then model the ears onto it by applying
     additional clay.
    Papier-mâché




Papier-mâché (French for 'chewed-up
   paper', due to its appearance), commonly
   called paper-mâché, is a construction
   material that consists of pieces of paper,
   sometimes reinforced with textiles, stuck
   together using a wet paste (e.g., glue,
   starch, or wallpaper adhesive).
The crafted object becomes solid when the
   paste dries.
                 Carve
• opposite of modeling. It is a subtractive
  process that starts with a solid block,
  usually stone-which is highly resistant
  to the sculptors chisel, but also wood,
  soap, wax, ice, etc.
                     Wood Carving
the two most common woods used for
   carving are Basswood (aka Tilia or
   Lime) and Tupelo, both are hardwoods
   that are relatively easy to work with.
   Chestnut, American walnut, mahogany
   and teak are also very good woods; while
   for fine work Italian walnut, sycamore
   maple, apple, pear or plum, are usually
   chosen. Decoration that is to be painted
   and of not too delicate a nature is as a
   rule carved in pine.




                      Carving knives


                                              Gouges and mallet
                         Stone Carving
           •   Stone carving is an ancient activity where pieces of rough natural
               stone are shaped by the controlled removal of stone.
           •   Sculptures can be carved via either the direct or the indirect
               carving method: indirect carving is a way of carving by using an
               accurate clay, wax or plaster model, which is then copied with the
               use of compasses, also called "proportional dividers" [1] or a
               pointing machine.
           •   The direct carving method is a way of carving in a more intuitive
               way, without first making an elaborate model. Sometimes a sketch
               on paper or a rough clay draft is made.
           •   Soft stone: chalk, soapstone, pumice and Tufa can be easily
               carved.
           •   Limestones and marbles can be worked using abrasives and
               simple iron tools.
           •   Granite, basalt and some metamorphic stone is difficult to carve
               even with iron or steel tools; usually tungsten carbide tipped tools
               are used
           •   The three basic types of chisels remain the same: a point for
               roughing out the stone, tooth chisels (also called claw tools) for
               shaping and modeling the forms, and flat chisels for the finished
               surfaces and details.
           •   Within each class there are endless variations; for example
               gouges, bull-noses and miter tools are all variations on the flat
               chisel.
calipers
                                    Wax Sculpture
•   Wax sculpture is an art form that dates back to
    the ancient civilizations of Egypt and Greece.
    History documents that wax figures were
    sculpted for religious ceremonies.
•   During the Roman Empire noble families
    displayed wax effigies of their ancestors. In
    Medieval Europe it become customary to
    preserve the likeness of great personages by
    making death masks. From the death mask
    molds three dimensional wax images were
    created to adorn tombs and crypts.
•   As this was a costly endeavor, this practice was
    reserved for royal and religious hierarchies.
•   With the development of a middle class during
    the Renaissance, the practice of preserving
    images in wax became more widespread.
•   In 18th century Paris, Marie Grosholtz became
    an apprentice of wax sculptures in the studio of
    her uncle. During the French Revolution, she
    was assigned the arduous task of taking
    hundreds of death masks. Later she married,
    becoming Madame Tussaud (photo of actual
    wax figure left), and with her husband
    established a "Wax Salon" in Paris. By 1833, she
    alone had established a salon in London,
    England.
                   Casting
                 Metal in sand mold




• Cast or welded metals,
  especially bronze, are also
  popular and may be combined
  with other types of sculpture to
  create unique images.
• Resin casting
    Casts can be made of the wax model itself, the direct method; or of a
     wax copy of a model that need not be of wax, the indirect method.
•
                        These are the steps for the indirect process:
     Model-making. An artist or mold-maker creates an original model from wax, clay, or another material. Wax and oil-based clay are often
       preferred because these materials retain their softness.
•      Moldmaking. A mold is made of the original model or sculpture. The rigid outer molds contain the softer inner mold, which is the exact
       negative of the original model. Inner molds are usually made of latex, polyurethane rubber or silicone, which is supported by the outer
       mold. The outer mold can be made from plaster, but can also be made of fiberglass or other materials. Most molds are at least two
       pieces, and a shim with keys is placed between the two halves during construction so that the mold can be put back together accurately.
       In case there are long, thin pieces sticking out of the model, these are often cut off of the original and molded separately. Sometimes
       many molds are needed to recreate the original model, especially large ones.
•      Wax. Once the mold is finished, molten wax is poured into it and swished around until an even coating, usually about 1/8 inch or 3 mm
       thick, covers the inner surface of the mold. This is repeated until the desired thickness is reached. Another method is filling the entire mold
       with molten wax, and let it cool, until a desired thickness has set on the surface of the mold. After this the rest of the wax is poured out
       again, the mold is turned upside down and the wax layer is left to cool and harden. With this method it is more difficult to control the
       overall thickness of the wax layer.
•      Removal of wax. This hollow wax copy of the original model is removed from the mold. The model-maker may reuse the mold to make
       multiple copies, limited only by the durability of the mold.
•      Chasing. Each hollow wax copy is then "chased": a heated metal tool is used to rub out the marks that show the parting line or flashing
       where the pieces of the mold came together. The wax is dressed to hide any imperfections. The wax now looks like the finished piece.
       Wax pieces that were molded separately can be heated and attached; foundries often use registration marks to indicate exactly where
       they go.
•      Spruing. The wax copy is sprued with a treelike structure of wax that will eventually provide paths for molten casting material to flow and
       air to escape. The carefully planned spruing usually begins at the top with a wax "cup," which is attached by wax cylinders to various
       points on the wax copy. This spruing doesn't have to be hollow, as it will be melted out later in the process.
•      Slurry. A sprued wax copy is dipped into a slurry of silica, then into a sand-like stucco, or dry crystalline silica of a controlled grain size.
       The slurry and grit combination is called ceramic shell mold material, although it is not literally made of ceramic. This shell is allowed to
       dry, and the process is repeated until at least a half-inch coating covers the entire piece. The bigger the piece, the thicker the shell needs
       to be. Only the inside of the cup is not coated, and the cup's flat top serves as the base upon which the piece stands during this process.
       Prior to silica, a mixture of plaster and fire-proof material such as chamotte was used.
•      Burnout. The ceramic shell-coated piece is placed cup-down in a kiln, whose heat hardens the silica coatings into a shell, and the wax
       melts and runs out. The melted wax can be recovered and reused, although often it is simply burned up. Now all that remains of the
       original artwork is the negative space, formerly occupied by the wax, inside the hardened ceramic shell. The feeder and vent tubes and
       cup are also hollow.
•      Testing. The ceramic shell is allowed to cool, then is tested to see if water will flow through the feeder and vent tubes as necessary.
       Cracks or leaks can be patched with thick refractory paste. To test the thickness, holes can be drilled into the shell, then patched.
•      Pouring. The shell is reheated in the kiln to harden the patches and remove all traces of moisture, then placed cup-upwards into a tub
       filled with sand. Metal is melted in a crucible in a furnace, then poured carefully into the shell. If the shell were not hot, the temperature
       difference would shatter it. The filled shells are allowed to cool.
•      Release. The shell is hammered or sand-blasted away, releasing the rough casting. The spruing, which are also faithfully recreated in
       metal, are cut off, to be reused in another casting.
•      Metal-chasing. Just as the wax copies were chased, the casting is worked until the telltale signs of the casting process are removed, and
       the casting now looks like the original model. Pits left by air bubbles in the casting, and the stubs of spruing are filed down and polished.
Metal Working

• Metal sculpture can be created by one
  of many methods, or even a
  combination of methods. Sculpture can
  be created by cutting metals with
  shears and snips, by firing and
  hammering metals, or by joining metals
  with sheet metal screws, rivets and
  soldering. More advanced techniques
  involve brazing, oxyacetylene welding,
  arc and heli-arc welding and fabrication
  of more complex forms.
• A found object, in an
  artistic sense,
  indicates the use of
  an object which has
  not been designed for
  an artistic purpose,
  but which exists for
  another purpose
  already.
          Modern sculpture
• Combines traditional methods as well as
  sculpture with movement.
• New methods can be assembled, glued,
  projected and constructed in many modern ways

				
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