Before diving into your furniture painting project, you might be wondering whether you need to sand your furniture before applying primer. I talked about this in my ultimate guide to furniture prepping, so definitely check out that post for more information on prep work. Sanding your furniture before applying primer creates a smoother surface for the primer. Sanding also removes any existing finish or paint, which can affect the final outcome of your project. Without proper sanding, you might end up with a rough and bumpy surface that won't look as sleek and professional as you want it to. Here are some tips for sanding your furniture effectively: Use fine-grit sandpaper (120–220 grit) for the best results. Sand in the direction of the grain to avoid creating scratches or swirls. Make sure to remove all dust and debris before applying primer. By taking the time to sand your furniture properly, you'll be setting yourself up for a successful painting project.