On Sun, 27 Apr 2008 10:51:06 -0400, "Charley"
wrote:

I've done it many times. Be sure to sand the surface of the Linseed Oil to
give the polyurethane something to adhere to.

Not necessary, in my experience.

Oil based polyurethane and/or vanishes (Waterlox, Rockhard) will
adhere perfectly to surface colored with BLO.

I use BLO as a colorant under shellac, oil based finishes, lacquer,
and water based lacquers. All will stick perfectly if the oil is dry.
If the oil is not dry, waterbased finishes will fisheye, and oil based
and shellac finishes will get "blooms", yellowish spots where the oil
is weeping underneath.

My favorite way to color with BLO is "Robert's Sealer" as it dries
extremely fast (10 times faster than straight BLO), and slightly seals
the surface. WB can go right over this. It's made with 1/3 each of
BLO, Seal Coat or dewaxed shellac, and real turpentine.


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