Is there any way to safely turn a bowl blank that is punky in the middle. I cut a maple that fell in my yard and there was considerable spalting near the base where it fell from decay. I have a few blanks that are solid wood around the bark area but in the middle of the area that will be removed to make the bowl it is all punky and really soft. Normally I wold put this between centers and turn the outside area and form a tenon on the base. Then turn around and chuck it up and remove the center. I do not think the soft middle will hold on the lathe. Any tricks around this or is it firewood? Thanks, John