I'm building the raised bed for the Jerusalem Artichokes. I made several vertical cuts where the logs will overlap on the corners. Next I'll knock out the "slices" with a wood chisel.
Last, I'll use the chainsaw to smooth the surface. Once I've finished the end logs I'll do the same to the side logs. When finished I'll put the flat sides together and secure them with a large spike. That way the side and end logs will be about the same height.