My brown paper bag flooring didn't dry flat. Why?

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Carpet Installers grinding back the subfloor to ensure the

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Why is my touch up not drying matte? Same poly (minwax fast dry warm satin). Used same technique as doing floor layers, but this didn't dry matte/flat and I'm left with this ugly shiny transition spot. What did I do wrong? : r/woodworking

DIY Stained Brown Paper Floor Awesomeness!~ Under $30 Do It Yourself Hardwood/Laminate Floor Alternative

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Paint separating from the wall

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What adhesive should I use to affix tile to formica?