Turning some white cedar from a tree that has been down a while. The end grain is very rough on the bowl. I have tried sharp tools, sanding sealer, and shear scrape, but cannot get a smooth finish. What is the best way to approach this type of problem - soft wood with rough end grain. Is it too far gone to use? The photo is before the sanding sealer, but the sealer did not help a lot. I have not tried heavy sanding yet.