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+-- Thread: Varnish over Shellac? (/showthread.php?tid=7345299)
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RE: Varnish over Shellac? - rwe2156 - 01-09-2019
You should always use dewaxed shellac for seal coats in finishing.
Waxed shellac is used as a top coat, not a sealer.
Personally, I would not apply any finish over waxed shellac, regardless of what anyone says.
Zinsser Universal Sanding sealer is a commonly available dewaxed shellac. All the others contain wax.
I recommend applying a coat dewaxed shellac over what you have before the topcoat. I'm not sure how you could remove the wax from the shellac once dried.
Keep in mind a finish can look ok for a while, then show signs of problems. Keep an eye on the legs.