Another risk is the migration of oil from the stain to the surface, known as "fish eyes," where the finish looks rough and crater-like. If this happens, you can wipe the surface with a mixture of water and denatured alcohol or lightly sand the area and reapply the finish.
Avoiding Cloudiness: Key Tips for Water Poly Over Oil Stain Finish
Using a proper de-glosser and ensuring the wood is clean can mitigate this risk. Lightly sand the stained surface with 220-grit sandpaper to create a slight roughness.
Not all oil stains are created equal, and not all water based polyurethanes are designed to interact with oil. Consider using a de-glosser or liquid sander to remove the glossy sheen without heavy sanding.
Avoiding Cloudiness: Key Tips for Water Poly Over Oil Stain Finish
Application Techniques for Success How you apply the water based polyurethane matters just as much as the preparation. Wipe away all dust with a tack cloth to ensure a clean surface.
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