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Expert's Corner — finshes

TIP: Penetrating Finish

fast-drying finish finishes finshes moisture oil penetration shellac the finishing store varnish water-based wood woodfinishing woodwork woodworking

The term “penetrating finish” is one of the most misleading in the vocabulary of finishing because all finishes penetrate. The term is generally used to describe just oil finishes, which dry slowly so they may penetrate a little deeper than faster-drying finishes. But depth of penetration doesn’t have anything to do with protection for the wood, and it’s here that the term becomes misleading because many people think it does, and some manufacturers claim it does. The common descriptive phrase is that the finish “protects the wood from the inside.” But the quality of a finish that creates better protection...

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