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Treatment; 01 Mar 2004; Treat old bronze disease. Clean detail. Clean small area and patch on the back.; Metals

Reason: Storage
Description: Corrosion and silicates removed with air-abrasive using Aluminium oxide, No1 powder.Only corrosion obscuring inscription and decoration removed. Old bronze disease removed as much as possible and areas treated with black silver oxide powder in a slurry of industrial methylated spirits (ethanol,methanol). Brushed with 5% Paraloid B72 (ethyl methacrylate copolymer) in acetone (propan-1-one/dimethyl ketone). Split areas patched with nylon gossamer and Devcon (epoxy) where possible and gaps filled with a paste of glass microballoons in 5% Paraloid B72 (ethyl methacrylate copolymer) in acetone (propan-1-one/dimethyl ketone) coloured with inert earth pigments.
Details: Treatment