Sculpture (Discussion)

What are the advantages to using re-purposed materials?

How would you personally use re-purposed materials in a sculpture?

El Anatsui (Ghanaian, born 1944). Gravity and Grace, 2010. Aluminum and copper wire, 145 5/8 x 441 in. (369.9 x 1120.1 cm). Courtesy of the artist and Jack Shainman Gallery, New York. Photograph by Andrew McAllister, courtesy of the Akron Art Museum.