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"Removing fingerprints from a copper exhaust hood that are in the clear sealer"
During house construction, we had a kitchen exhaust hood built to our specs by a copper smith not schooled in finishes. The shape and construction of the hood is fine; however, when applying the finish, i.e., a patina causing agent (which looks great), and a clear "sealer", he left fingerprints, handprints, before it dried, and cannot remove them. He has buffed it, but no success. We have decided to find someone else or do something our selves to solve the problem. Surely there is a solvent or something that can be applied to remove the sealer and/or the patina agent and/or take it back to the original copper or close to we can try again. Help!?
The hood is four sided, 7 feet long. A big one.
home owner - Laurel, Mississippi
Been there, done that...Has nothing to to with experience, just with the human factor.
Options: Spot Repair or Complete RE-DO.
To spot repair, you can strip the area with a wet cloth -Lacquer thinner. Let it soak. It is tough, because thinner likes to evaporate. If you use a thick stripping agent, you really have to keep an eye on it, plus it stink and stings worst than thinner. Then when strip, Use 0000 steel wool [affil. link to info/product at Rockler] 0, followed by steel wool 000. Now the metal is ready for the patina process. You could buy an Antique Solution at Home Depot and spot apply. Pat or wipe, try to re-create the original pattern use. Clean and then clear. I won't be surprised if you leave finger prints yourself.
RE-DO - Strip, Prep, Antique application, and Clear. Strip at a plating shop or have it glass-bead blasted. Apply antique solution, clear with gloss or satin lacquer.
Ron Young has a book with patina formulas =>
website, and links
Alicia Moreno, La Kromadora
Escondido, San Diego No., California