When the nail head breaks off a nail, it can be tough to get the claw of the hammer to grip the nail. To remove the nail, slip the claw of the hammer over the remainder of the nail and then pull the nail out by moving the hammer sideways instead of straight out.
bulrush's advice is a good. Vise pliers are among the most useful tools I have. They replace normal pliers, clamps, vises and wrenches. For those who don't know what they are, see the image below. You can buy a generic one for about $4.99 although quality ones, like genuine Vise Grips, cost considerably more. My favorite though are the patented LockJaw Pliers. They self-adjust for thickness/width. Since the pressure is adjustable, you can even use them to clamp broken figurines as the glue hardens. Normal vise pliers only adjust for width, with no option for pressure.
Looking at the vise plier below, you can see the procedure bulrush describes. Clamp the nail and lock the pliers. Then bend, using the rounded part as a fulcrum against the surface. The the lever action will pull the nail out. Gently rock until the nail is removed. If you are doing this against a wall, you might want to protect it by placing a cloth under the rounded part (aka fulcrum).
Vice grips also work great. They usually have a back side behind a jaw which is rounded. Grip the nail in the jaws and lock it. Now bend the vice grips so the back rounded part contacts the surface. Now just keep bending back until the nail is levered out.
Login using the form on the top of the page to post feedback (if you are a registered user). If you have not yet registered, click here to do so. It's FREE!.