To ensure that the design lasts and weathers well the correct material must be used. I want to look at a range of possible materials to ensure that the final piece is workable and viable for the space and the school.
Metals -
Bronze tends to be the most used metal however, gold silver, aluminium, copper, brass, steel, lead, and iron are also used. Most metals are extremely strong, hard, and durable, with a tensile strength that gives a freedom to design compares to stone or wood. Metals can be worked in a variety of ways in order to produce sculpture. They can be cast, squeezed, hammered, bent, cut or welded.
Stone -
In the past stone has been the principal material for sculptures, this is due to most stone being resistant to the weather which means it is particularly suitable for external use. Most stone has a homogeneous texture and a hardness which make it ideal for carving.
Wood -
All woods can be used for sculpture as the structure of wood gives it considerable tensile strength. This strength allows it to be carved easily and a number of pieces of wood can be jointed together before carving if a larger piece is being produced. However, wood is primarily used for indoor sculpture, as changes of humidity and temperature can cause it to split, and it is often attacked by insects and fungus.
From these details it seems that metal is the most straight forward and long term way of producing a piece on-budget. I am interested in looking in more detail at possible metals and to get a rough idea of its possibilities, strengths and weaknesses.
Info found at: http://www.uv.es/EBRIT/macro/macro_5005_69_5.html
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