Electroforming is the ability to grow a crystalized structure of copper on any conductive surface. The art comes in with the how to get the surface conductive / the balance of chemistry and electricity to grow the copper. This technology is used today in a much thinner scale called electroplating. Electroforming is originally based off electrotyping and was used by museums to build copies of pieces for display in the late 18th century. It was also used in the print industry for many years to preserve woodcut plates.