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Spelter Sculpture French Warrior (ca. 1880)
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<p>[QUOTE="afantiques, post: 223844, member: 25"]Spelter is damn near unrepairable. It forms a crystalline fracture surface that rapidly oxidises. Drilling into the fracture surfaces to insert a pin that can join the pieces, the pin epoxy glued in the freshly drilled holes gives mechanical strength and holds the broken part in place. The actual crack area may be glued and surface coloured to match the body. Just glue is never strong enough and the low melting point of spelter makes most home soldering ineffective and prone to melt or rapidly oxidise the area heated. The success of such methods would vary a lot with the ability of the restorer.</p><p><br /></p><p><br /></p><p>It is possible that precisely controlled temperature soldering under inert gas may work, but it would require a lot of experimentation. I know of no published work on this, it is the sort of trade secret resiorers keep to themselves.</p><p><br /></p><p>The figures are also commonly seen as companion pieces to a clock of the period forming what is called a clock garniture.[/QUOTE]</p><p><br /></p>
[QUOTE="afantiques, post: 223844, member: 25"]Spelter is damn near unrepairable. It forms a crystalline fracture surface that rapidly oxidises. Drilling into the fracture surfaces to insert a pin that can join the pieces, the pin epoxy glued in the freshly drilled holes gives mechanical strength and holds the broken part in place. The actual crack area may be glued and surface coloured to match the body. Just glue is never strong enough and the low melting point of spelter makes most home soldering ineffective and prone to melt or rapidly oxidise the area heated. The success of such methods would vary a lot with the ability of the restorer. It is possible that precisely controlled temperature soldering under inert gas may work, but it would require a lot of experimentation. I know of no published work on this, it is the sort of trade secret resiorers keep to themselves. The figures are also commonly seen as companion pieces to a clock of the period forming what is called a clock garniture.[/QUOTE]
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