Original Message:   Thoughts on copper

Nice! Re. your copper comments, you might investigate: https://www.nps.gov/museum/publications/conserveogram/cons_toc.html#collectionpreservation for appropriate treatments, or https://www.copper.org/resources/properties/protection/clear_finishes.html (in the latter, see 5% oxalic acid mixture but I would suggest trying it without pumice powder). I would definitely test a tiny area first, using the gentlest means possible (little pressure and a Q-Tip?). I seem to recall that oxalic acid is the main ingredient in certain cleaners; you might find something you could use readily available at a local Alaska hardware store by Googling. Copyright 2024 All rights reserved by Bead Collector Network and its users

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