no matter what i do once i open a can of varnish it immediatly skims over thickens up and gets clumpy , how do i keep varnish "fresh" ?
I have had luck with storing the can upside down. There is a product that I think is called blonox, that is really just nitrogen, that you blow into the can, and it displaces the Oxygen/Air. Haven't tried it.
Dave, I believe you're referring to Bloxygen. It's made for exactly this purpose.
Can't you just let skin form and protect the rest of the varnish? Then you remove the skin when you next want to use can, no?