posted
The local Nidaros Cathedral,http://en.wikipedia.org/wiki/Nidaros_Cathedral , is restoring its spire and gold ball. Gold ball is an 80 cm diameter copperball, on it is attached firegilded copper parts; real shiny, except some places it is covered with brown metal oxcide, presumably iron coming from the the top cross. . Any ideas how to clean of to get to the gold beneath ? . I supposed I was to regild it, but no reason to destroy the nice old firegild if not nessecary, ist it ?
-------------------- Preston McCall 112 Rim Road Santa Fe, New Mexico 87501 text: 5056607370 Posts: 1552 | From: Santa Fe, New Mexico | Registered: Nov 1998
| IP: Logged |
posted
Firegild is an amalgan of gold and mercury brushed onto metal and then heated with a flame so that the mercury evaporates and the gold is redused to pure gold chemically bound to the underlaying metal. A very hazardious and forbidden metod nowadays.
-------------------- Stein Saether GullSkilt AS Trondheim Posts: 1183 | From: Trondheim Norway | Registered: Nov 1998
| IP: Logged |