Leosghost - 7:28 pm on Oct 23, 2012 (gmt 0)
An artist gives a model of a sculpture to a foundry. The workers cast it full size in bronze. The artist is the author.
In the case of casting, the artist, whenever possible, supplies the full size original from which the molds are made.. rarely in casting does the artist supply a reduced size model and leave the foundry to make the intermediate molds and the full size final cast from it..( because doing so complicates the possibility of the artist adjusting or making aesthetic changes required due to the change of size ) unless the final casts are very large*..
However some modern / minimalist / conceptualist sculpture is made from less than "final size" models supplied by the artist(s)..
( a close neighbor of mine when I lived in the South of France ) makes most of his works this way since the last decade or so at least..
Twisting railway track and construction girders and large section metal bars requires industrial machinery..so the final work is farmed out to "industry", to conform to supplied "models"..
*There are increasing numbers of modern artists who do use this "production line" method though, Damien Hirst is an artist who "farms out "the creation of full size casts from maquettes.."Verity" is an example..He also "farms out" the final realisation of many of his other works ..including many which are not cast..