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Why is my polyurethane blotchy?
If it’s still blotchy don’t attempt to brush stain on the light spots and allowing it to dry. This will result in the finish not adhering. Now to your finish, very few finishes will allow you to apply another coat until the first coat is completely dry.
How do I get a smooth final coat of polyurethane?
Sand lightly with 240-grit sandpaper between coats, then let the last coat dry for at least 24 hours. This is standard practice with any wood finishing job, and is nothing out of the ordinary. That said, sanding bare wood beforehand to create a smooth foundation is key.
What does blotch mean on a wood board?
If you haven’t had the pleasure of experiencing blotch, its a phenomenon that occurs when a board takes stain unevenly, creating unsightly dark patches (a relatively “mild” case pictured left).
How can you tell if polyurethane is too wet to paint?
Stir the material you’re using until the tip of the stir stick is no longer covered with white residue when you scrape it on the bottom of the can. Allow wood to dry completely before applying polyurethane. Test it with a few drops of water — if they don’t immediately soak in, the wood is too wet to paint.
What kind of flattening agent does polyurethane use?
Both water- and oil-based polyurethane are varnishes, and they dry to a naturally glossy finish. To create a satin or matte finish, manufacturers add a flattening agent — usually zinc oxide — which disperses reflected light and cuts the gloss out of the sheen.
What to use on blotchy cherry wood panel?
Gel-stain glaze darkens the right side of this cherry panel without increasing the contrast caused by blotches. If you need a darker glaze to cover up the blotchy areas, use just the tip of a dry, natural-bristle brush to distribute the stain (instead of wiping it off) until it’s an even color. Wipe the brush off frequently as you work.