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Schooner Varnish - "skinning" over in open can
While finishing the cockpit of my CS 17, a semi-dried "skin" of varnish formed in the can between coats. I decanted what I applied and sealed the can within a few minutes of openning it.
I hear the skin is normal, but I don't know how to prevent and/or deal with it as I turn toward the exterior finish. The main problem I had is that little chunks of the skin made their way to the boat as I applied subsequent coats. If I'm going to do six coats top and bottom, that's 11 times I have to deal with this.
I assume that removing the skin will not change the composition of the varnish - that is I assume the skin is not from a single component of the matieral.
Suggestions welcome.
Dan - Victoria, MN
2 replies:
RE: Schooner Varnish - "skinning" over in open can
I had a similar problem with my leftover thinned varnish that I kept in a screw-top jar. I now use a disposable paint/varnish filter - basically a paper cone with a fine mesh. Home Depot has them in my neck of the woods (Colorado), although I had to look pretty intently to find them. I use the "medium" mesh filters.
RE: Schooner Varnish - "skinning" over in open can
» Submitted by Jerry - Sat, 5/10/08 » 11:21 AM
Before resealing a can of varnish I add about a tablespoon of thinner carefully so that the thinner floats on top of the varnish. The thinner keeps a skin from forming on the varnish by sealing it from the air and it should be good for a couple of weeks. This works for oil-based paint, too. Good luck.