I get a lot of used/recycled wood. I thought I'd try. Wow, exceeded my expectations. Push the nail back out of the boards. Some things to consider. The nail should be somewhat straight. Not perfect, but no 90 degree bends. The other thing is that you can't screw in larger screws. I'm sure the tool has enough power, but the shank is too narrow for the thicker body of the larger screws. It's also amazing how quickly I can get nails out of the board now.