Thanks everyone, sorry it took so long to get back. For the questions, its black walnut,and everything is fire blued. The knots did not show on the outside of the plank at all. Ive got a longrifle started based loosley on RCA 124 from the same plank. By the way, I cut the planks from a large down tree on top of Black Mtn. on the Ky. Va. border during a bear hunt. Its hard and dense for black walnut,also carves very well,till you find some knots! Keith