If you want to do the best woodwork possible, you need to know the best way of sanding trim. And the fact is, every kind of trim needs to be sanded before staining or finishing, especially if you plan to use a clear sealer. Texture is the reason why. The spinning tools that mill trim always leave behind at least small undulations on the profiles they create. These might not be noticeable when the trim is bare, but these flaws will show up after a finish goes on. This is why all trim needs to be sanded before finishing. The thing is, this is not only a pain, but it also takes a long time to do right. And if this wasn’t enough, there’s the danger of rounding over the crisp details that make trim attractive. That’s no good, but it’s where a simple sanding attachment can help. Watch the video below to see a “sanding mop” in action on my drill press. Simple tools like these deliver smooth results on irregular surfaces, and as unlikely as it sounds, they don’t make crisp details dull, either. Click below to watch the sanding mop doing its thing in a video I made a while back.