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Please note this is an archived topic, so it is locked and unable to be replied to. You may, however, start a new topic and refer to this topic with a link: http://www.fiddlehangout.com/archive/60167
fiddler135 - Posted - 06/30/2025: 17:26:59
Why does alcohol remove color from a (dried) oil varnished surface?
Edited by - fiddler135 on 06/30/2025 17:27:44
The Violin Beautiful - Posted - 07/01/2025: 03:33:58
This really depends on the makeup of the varnish. Some oil varnishes are sensitive to alcohol while others can be drenched with it and remain intact. It may come down to the chemical structure established from the cooking process (e.g. long vs. short oil) or it may be related to the oil:resin ratio—I’m not certain. Solubility of the chosen resins for the varnish in alcohol may be a factor.
Linseed oil is the most popular oil used for making varnish, and the oil itself plays a key role in the polymerization of the varnish.
wrench13 - Posted - 07/01/2025: 07:00:57
Dont know about removing color, but enough alcohol makes me see 2 fiddles!
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