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What is the primary advantage of using sealer prior to applying grain filler? The main reason to seal1 is arguably to minimise the over-absorption of the binder in the filler, which can lead to chalking and/or adhesion problems down the line. This isn't an issue with all fillers, but it certainly can be with traditional oil-based pore fillers for example. ...


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Let's collect the comments into an answer. The only reasonable answer here is, "no". Short of a waterproof fibreglass or epoxy "shell" on the outside, there is no 100% waterproof finish you can apply to any surface that'll work ideally. Hot tub (or barrel, or ship hull planking) construction depends on a close joint and thicker, clear-...


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It really depends on personal style choice. A big reason to seal and finish the frame was addressed by another poster: expanding and contracting. As wood absorbs moisture and releases moisture, that most gets out through the ends of the wood, which is why a lot of people use "end seal" to make sure their wood doesn't crack. You can use a polycrylic ...


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