Sources
Guide to Visiting the Nascher Sculpture Center:
http://www.nashersculpturecenter.org/getdoc/27e8c31a-6ee4-4723-ab1f-f370cd9b72bd/Sculpture---Materials---Methods.aspx
Victoria and Albert Museum- Sculpture Techniques:
http://www.vam.ac.uk/content/articles/s/sculpture-techniques/
http://www.nashersculpturecenter.org/getdoc/27e8c31a-6ee4-4723-ab1f-f370cd9b72bd/Sculpture---Materials---Methods.aspx
Victoria and Albert Museum- Sculpture Techniques:
http://www.vam.ac.uk/content/articles/s/sculpture-techniques/