What do we mean by "cold casting"?

 

The vast majority of Design Clinic products are made from polyester resin using a technique commonly known as "cold-casting" This usually involves coating the inside of a silicon mould with finely powdered metal (eg Bronze) and then filling the mould with a mixture of catalyzed  resin and calcite powder (we also use slate powder). When cured the cast is removed from the mould and what we have is a solid resin object with a thin outer coating of metal. The piece can then be polished like a conventional metal casting, or in some instances treated with chemicals to produce a genuine patina.

For smaller castings a mixture of metal powder and resin is poured into the mould, creating a cast which has metal all the way through it. This gives the casts a more realistic weight which is important for small objects, but it is more expensive to produce as it uses much more metal.

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  Different kinds of resins and powders produce different finishes, and we can produce not only metal finishes, but also ivory, slate, stone and crystal clear as well as an unlimited range of colours. The clear/translucent products are cast from a special resin which requires no filler and has a refractive index close to that of water. The possibilities of casting with these materials are endless and over the years we have developed our own inlaying techniques and unique finishes.

 

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