I know this is more than likely a silly question. however I am going to ask it anyways, because I am like that lol. When you sand a project how do you know when you are done. do you go from the coarsest grit to the lowest all the time or is it dependent on the wood and its softness? how do you know when it is time to go to a lower grit sandpaper? The reason I am asking is because every time I feel like I have sanded enough and I coat it there always seems to me that I should have sanded it more. Well thanks for those who take the time to answer my question.