 Polyurea coating and undercoatOnce the carved form is completed the form is coated. This can be done in a variety of materials. In this case a coating of flexible, impact resistant polyurea was used. This is ideal for work exhibited outdoors or where the work is likely to be touched by the public. The polyurea is then spray undercoated with suitable primer, prior to further coatings and patination. |  Final coatingThe final coating of the sculpture replicates those used on the maquette. In this case a coat of bronze powder, and iron powder for the concave areas, is used. The powder is bound within a acrylic medium , This will allow for the acids used for cold patination to be used in the same way as for a real bronze cast. |  Bronze patinationThe outer forms are patinated using acid solutions appropriate for the chosen colour. In this case blue-green. |
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