On Friday, the price per thousand board feet climbed another 5% to $494. Since bottoming out at $389 per thousand board feet on Aug. 27, the "cash" market price of lumber has swung back up 27%.  While percentage-wise prices are rising fast again, they're still far below the levels reached this spring. At the height of the lumber bubble, prices topped out at a record $1,515 price per thousand board feet in May. But this recent bounce does represent a clear trajectory change for lumber, which spent much of the summer in a ...