Does Mastic cross-link mechanically with the paint in the same way that Damar does? And if it doesn't, is it possible that Mastic will yellow even worse so this wouldn't work either? What about a Copal varnish of Copal with Canada Balsam and turps (I read this recipe somewhere)?
I guess I'm trying to find a safe way to cover a newly-finished work, so that I can let it go immediately and then come back in six months for a coat of full-strength varnish. This is, of course, assuming that eventually someone might actually want one of my paintings one day
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Thanks again for your help, Michael. You have NO idea how much I've picked up from you in the past year
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Minh