Jesmonite

Jesmonite is a composite material used in fine arts, crafts, and construction. It consists of a gypsum-based material in an acrylic resin. It was invented in the United Kingdom in 1984 by Peter Hawkins, as of July 2019 still the Technical and Development Director of the Jesmonite company.[3]

Simon Fujiwara's A Spire (2015), in cast jesmonite, at the University of Leeds[1][2]

Usage

Jesmonite is a versatile material and is used in several ways. It is typically used for creating sculptures and other three-dimensional works, but can be used with other materials as a ground for painting. It can be used as a surface material in building and construction. It is considered an attractive alternative to other resin-based materials, such as polyester and fiberglass. It can be used for casting and laminating.

Besides its popularity in sculpture, jesmonite is popular in other areas where casting and molding are common, such as architectural stone and plasterwork that has a requirement to be very lightweight, taxidermy, archaeology, and palaeontology.

A 2016 Financial Times article described jesmonite's increasing use in interior design, seeing it as a natural-looking alternative to plastic for "high-end" goods.[4] In 2017, jesmonite was named "Material of the Year" by the London Design Fair.[5]

Properties

Jesmonite is considered durable, flame resistant, and resistant to impact. It can be used to fabricate both small and large objects. When mixed, it accepts colored pigments and metal powders. Its surface can be finished to resemble plaster, stone, metal, and wood.

Jesmonite is considered a low hazard material. The finished composite emits no toxic fumes. The mixing process requires no harmful solvents. However, the mixing should be performed with rubber gloves, eye protection, and dust mask, and should take place in a well-ventilated area. Cleanup is performed with water.

2012 Thames Diamond Jubilee Pageant

In the 2012 Thames Diamond Jubilee Pageant, the ornate prow sculptures on the Royal barges Gloriana and MV Spirit of Chartwell were carved and moulded in Jesmonite and decorated with gold leaf. These included dolphins, relief plaques and Old Father Thames.

A Spire

A Spire is a cast jesmonite sculpture by British-Japanese sculptor Simon Fujiwara, commissioned to stand outside the new Laidlaw Library of the University of Leeds, England, in 2015. The lower sections incorporate particles of coal, to acknowledge the city's early industries, and the upper stages show cables and leaves reflecting today's digital and natural world. The 9 metres (30 ft) tall cylindrical form relates to two nearby church spires on Woodhouse Lane.[1][2]


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References
  1. "A Spire - Laidlaw Library". Projects. Mike Smith Studio. Retrieved 22 July 2019.
  2. "Public Art Trail" (PDF). University of Leeds. Retrieved 22 July 2019.
  3. "About". Jesmonite. Retrieved 22 July 2019.
  4. Lorenz, Trish (26 February 2016). "Why Jesmonite is breaking the mould in home design". Financial Times.
  5. "London Design Fair Announces the First Material of the Year". London Design Fair. 22 June 2017. Retrieved 22 July 2019.


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