The bowl is ready to be sanded but the spalting determines another difficulty to be overcome.
I coat the inside and outside with paste wax to ease the sanding. I have no idea why this helps but I know that the wax will speed up the first sanding immensely. The wax I am using is a blend of 2 parts mineral oil, to 2 parts vegetable oil to 1 part bee's wax. In this case I will start with 60 grit and proceed all the way to 2000.