prevents more than that

Posted by Charlie Jones on Oct 17, 2006

The thickening is due to the varnish curing. Varnish, at least the ones we are talking about, cures due to exposure to oxygen. The propane displaces the air in the can, being heavier. It blocks the remaining material from curing since there is no ( or little ) remaining oxygen.

Personally if I was putting on a third coat and the can of stuff had gotten lumpy, I'd consider dumping it and buying fresh. After all how much time and effort have you spent to risk screwing the boat finish at now, compared to the cost of one more can of varnish?

But should I choose to try to use it, here's what I'd do-

Thin the remaining varnish till it was workable, stirring thouroughly.

Strain the varnish into an new can- you can buy new empty pint and quart cans from paint dealers such as Sherwin Williams. I'd pitch the stuff left in the bottom of the original can.

THEN I'd try varnishing something else with the strained varnish and be certain it hardened before I touched the boat with it.

In Response to: Re: Epifanes Question by Mac on Oct 16, 2006