If you're an experienced woodworker, then you must know the effectiveness of polyurethane in protecting woodwork. When it comes to removing unwanted bumps and blemishes from the finish of your woodwork (which may have been cut with the help of miter saws), sanding between coats can come in handy. Sanding is a good thing that should not be underemphasized. So, is it advisable to sand the last coat of polyurethane? The answer is no. Sanding too roughly or after the last coat of polyurethane may penetrate the finish and damage the underlying layer of stain. The best approach is to sand lightly between coats. In this process, you need to use finer grit sandpaper. It is a sure way to keep away unwanted imperfections. Moreover, it is a reliable way to ensure that successive coats go on nicely. Before sanding a coat, make sure that it is completely dry. Preferably, use sanding sealer in the top two coats; it's a time-efficient and economical option. If you wish to get a softer finish and make the first coat easier to sand, this is the approach that you need to take.
To get the best results, make sure to keep in mind the following:
If you are new to woodworking and DIY activities such as this, then keep in mind that although polyurethane is considered easy to use, the reality is that you need to practice if you want to get your finish right. If this is the first time you're undertaking a wood project using polyurethane, you are better off testing your tools and testing how your finish applies in a demo project.
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