On Thu, 10 Nov 2011 14:32:06 +0000, Perry
wrote:


I am preparing to varnish the rails thwart and deck of a newly
constructed canoe. Mahogany and Ash. Any advise on when or when not to
use a sealer first? Also, I have seen how varnish can yellow the
appearance of Ash, any advise on maintaining the white appearance of the
wood?

Well, varnish is sort of amber. Logically it would tend to turn what
it is applied to a bit yellowish. If you insist on a totally clear
finish you might look at a clear lacquer - cellulose not natural. It
probably isn't as good a protection for the wood but on the other hand
your canoe probably spends most of it's time under cover.

--

Cheers,

Bruce