Sometimes you end up with a little dent and its always in the spot it will show the most. There are several ways to get rid of them, but here is the way I do it the most. I’ve actually tried sanding them flat only to end up with a bump. This is were the dented wood is still there and the finishing process caused it to raise. So its sometimes beneficial to address a dent and fix it unless you want an eyesore that you’ll see every time you look at your project.