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topic 2388

Patinating a large bronze sculpture


I am looking for help in two areas. First is that of patinating large outdoor sculptural bronzes in the brown range. I would like solutions that can be applied in situ, either cold or in conjunction with a torch. While I realize that all patination solutions are toxic I would like to avoid chemicals containing mercury, nickel, cyanide etc.

The second question is that of protective wax coatings. I am often asked to maintain sculpture which has been waxed in the past but no one remembers what type of wax was used. Any information on microcrystalline waxes with good hardness, (low durometer test number, ie. below 5) would be greatly appreciated.

Ed Bowkett
conservation service - Ottawa, Canada

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