Report Bow end grain runout in The Pegbox Posted Monday at 11:14 PM 6 hours ago, duane88 said: I believe that Marco Raposo has been passionate about trying to use recycled wood. I don't think that Arcos does that, but Vito does post here on occasion, so he could be asked about that. Arcos is more into planting sustainable harvest products for the future. Not to be disputatious, but from Marco Raposo's own website : We only use mature Pernambuco trees, that are over thirty years old. Once a tree is selected, the heartwood is extracted from the core. The wood must have straight veins and be free of knots in order to be used for bows.