Where possible we retain the original finish of a light - it is part of its history and emphasises its heritage. However, sometimes leaving a surface as we find it just isn’t possible. Some lights made from non-ferrous metals, such as copper, arrive so severely degraded we need to remove their outer layers to allow any further surface treatment to be applied. We do this with a technique known as ‘aqua blasting’. Water is mixed with glass particles and applied under high pressure to the surface to ‘blast’ the layer of degradation away - leaving the surface clean for the next stage in restoration.