Materials and Technologies

Learn about the processes and methods for creating Himalayan art that were developed over centuries, refined through collaborative efforts of patrons and artists, and encompass all known traditional art making media. To make three-dimensional objects, artists sculpt and carve in clay, stone, and wood, cast images in the round, and hammer repoussé reliefs in metal.

Textile artisans produce images using the appliqué technique, embroidery, and silk weaving and follow the same rules of proportion as the painters of two-dimensional works. Ordinary people also create objects, such as plaques made from molds using clay, and employ woodblocks to imprint images on cloth or paper to make prayer flags, amulets, and texts. Skilled painters create hanging scrolls called thangka using mineral pigments on prepared cloth or silk canvases.

Casting and Shaping Metal

During the past few centuries metal has become the predominate medium for producing religious sculpture in the Himalayas.

Metal is shaped primarily by way of hollow or lost-wax casting and embossing, also known as repoussé. Both these methods thrive in Nepal, where craftsmen have formed workshops that specialize in these techniques and cater to Hindu and Buddhist patrons. The choice of creating an image by casting versus embossing is often an economic one. Given that casting requires more metal, large images and architectural decorations are usually made by embossing.

Embossing

In embossing, sheets of soft, malleable metals, such as gold, silver, lead, or copper, are hammered over designed forms (matrices) of wood and other materials, heated for malleability (tempered), and hammered again until they assume the intended form. Large, complex sculptures are created in parts and later assembled with the help of fasteners (rivets) and soldering, or by fusing them together. Some small parts can be cast as well. Artists employ chiseling and sometimes chemically coat the surface with gold, or gilding.

Objects in the Exhibition

Gilt open metalwork depicting serpent deity hooded by three snakes, her tail curling amidst acanthus scrolls
Flying Naga
Nepal or Tibet
14th century
Gilt copper alloy; repoussé

Process of Lost-Wax Metal Casting

The lost-wax technique of hollow metal casting, perfected by Newar artists of Kathmandu Valley, has remained a thriving practice from ancient times to the present day.

Stage 1

Artisans start by creating a wax model. They melt a combination of beeswax, vegetable oil, and tree resin into sheets from which parts of the whole figure are molded. These pieces are put together to make a wax version of the figure.

Stage 2

They make the clay mold by coating the inside and outside of the wax figure with several layers of fine and coarse clay. The first layer, mixed with cow dung, is the most important for ensuring the best casting. This is the longest stage, as each layer must dry before the next one can be applied. The coarse clay is mixed with rice husks and applied in layers. When the clay mold has dried, the artisans make an opening at the base so the melted wax can be poured out and molten metal poured in.

Stage 3

The actual casting process begins by melting the wax figure and draining it out of the mold. Once drained of wax, the clay mold is baked, making it hard and ready to receive the molten metal.

Stage 4

Hot metal is poured into the mold. Once it cools, the artisans break the mold to reveal the metal sculpture inside.

Stage 5

They weld the rough metal statue to fix any casting imperfections, chisel it to reveal details, then buff and gild the surface. Each task requires specialized skills and is performed by several people.

Stage 6

Artists paint and decorate the sculpture with semiprecious stones. The statue is ready for consecration, the ritual by which the deity comes to inhabit the image.

Video

The Rubin Museum of Art, "Lost-Wax Metal Casting," YouTube, June 26, 2023, 14:58, https://youtu.be/oKVUhV6Q3e8.

Objects in the Exhibition

Painting on Cloth
Painting is the primary two-dimensional form for image making, but different media, such as woodblock prints and woven textiles, are also used to create similar compositions.