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I have some sap seeping out of a fur/pine door I installed and stained last year, how do I stop that from coming out?


On interior wood, painters use alcohol-based shellac to pre-seal knots before they prime.

Shellac blocks both oils and water for a good stain-proof seal, while also promoting adhesion between coats.

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  • Not sure, I think he used minwax conditioner. But I can sand it down to bare wood, then use an alcohol based shellac before staining it again? – Carlo Manzella Mar 26 '18 at 23:10

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