I use Wood Sheen to bring out the details of my signs.
It is a Rubbing stain/sealer.
I flood the surface being sure to fill the depressions and then
wipe off the surface leaving the carved details full of wood sheen.
After allowing enough time for the wood sheen to soak in and darken the carved areas,
I rub the surface with a soft cloth being careful not to wipe the wood sheen from the carved areas.
Then when everything has dried (usually the next day),
I spray a clear sealer and finish coat on the entire surfaces.

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