I don't use Watco, but pure tung oil and walnut oil. I find that sanding to
very fine grits is one way to prevent the end grain from absorbing too much
oil. I usually sand to 1000 grit. This might also depend on the type of
wood to a certain extent.
Martin
Long Island NY

wrote in message
oups.com...
What kind of a sealer can I use before a Watco danish oil to prevent
the end grain from absorbing so much oil and darkening it to much.
Rod