If wood artist Bill Saily spends at least 10 minutes sharpening his blades for every hour he spends carving, then he spends just under seven hours a week stropping and whetstoning. You don’t doubt him for two reasons: First, he worked for more than 30 years in the timber industry designing and manufacturing cutting tools. Second, there was something special about the exquisitely detailed wood reliefs on the table in front of him at Saturday’s Umpqua Carvers Show at the Roseburg Senior Center. Saily, a mill owner’s son who designed cutter heads for years as an engineer for Pacific-Coe Saw …