Any tricks for getting rusty iron nails out of a wooden beam? They have mostly rusted off so they are flush with the surface. I am going to machine off the top inch of the beam so I can dig into it a bit to expose a bit of the nail. I've been grabbing the stump of the nail with side cutters and pulling the remains out, but sometimes the nub just snaps off. I can't hammer them in further either, as they are too weak due to rust. I was wondering if there is something like a narrow core drill that would make it easier to get them out?