Many times the slices of wood I use aren't wide enough for the piece I'm working on. So, I have a choice to make. I can either cut the live edges off so they are straight edges making it easier to join the pieces together or I can maintain the shape of the live edges as much as possible and join them together which is much more challenging to do. Take a look at these pieces and you'll see what I mean. This is a footboard and is made with 4 slices of a log. I marked the areas of interest on each picture so you can hopefully see what I'm talking about. You can zoom in on that last picture to see the detail.