It looks like we will be dealing with this Covid-19 virus for some time. I have been working in the wood turning shop nearly every day to keep my sanity and I am completely out of burls to turn. Soon I will be turning logs with interesting features like crotches and stresses which usually give interesting grain, but today I turned something unusual, the complete lower part of an old birch tree. A cross section slab was cut near the roots. The top of the slab in the photo is a