All posts tagged: vitreous

Kiln fired enamel

Enamel – a fantastic way to bring some colour into what can often become a world of black and white when working with silver. This week, I have been testing a set of colours from Thompson Enamels – transparent/lead free for use on silver/copper/gold. Enamel is powdered glass which, when heated melts, flows and hardens to a smooth, durable vitreous coating on metal. Enameling can also be done on glass or porcelain, but requires enamels with a different COE (Coefficient Of Expansion) – expansion rates must be suited to the base surface material. Prior to using enamels, they need to be washed to remove the “fines” – (extra fine particles which can cause your enamel to be cloudy). This can either be done: wet: by rinsing in water multiple times until the water runs clear or dry: by using a series of sifting pans to separate the particle sizes (60, 80, 100 mesh etc.) Regardless of which technique you plan on using to apply the enamel, the silver must be properly prepared, polished and cleaned to …