I started working on this stool when my wife was pregnant with my son. He is now 7. For some reason, it got set aside for a few years. I started working on it again this summer. All the big pieces were cut, planed and jointed by power tools in a class. Except for the dadoes, I cut all the tenons and mortises by hand and and cut the curves with a bow saw. There's some joints I'm not proud of in there that are held together with epoxy. I'm not sure what those lines are on the top, but I couldn't sand them out and they popped right out when I put the Danish oil on them. It looks worse in the photo. My wife didn't notice them until I pointed then out and she likes it anyway. I think it would only take me 6 years to make another one.