Gédéo Siligum is a very popular product that both professionals and amateurs love. It's a very fast- setting, two-component silicone moulding compound that lets you create your own moulds. You can use it to mould small objects and flat decorations, and create your own silicone mould. You can then use these moulds to cast resin, plaster or candle wax. Siligum is made up of two pastes to be mixed in equal proportions to achieve the reaction. Just a few millimetres thick is enough around the object to be moulded. It takes just 5 minutes to set. To pour Cristal resin afterwards, Pebeo recommends that you coat the mould with Vaseline beforehand.