If heat fails, try an impact driver, a fixture in auto-repair shops. While most models rely on compressed air, versions are specifically made to address stuck fasteners; these operate on a cam principal, and their energy is derived from the blow of a hammer. I’ve used mine many times—it’s compact, inexpensive, and invaluable. Finally, if the stubborn fastener is a nut that won’t budge, you can use a tool called a Nut Cracker, made by Craftsman. Nut Crackers rely on a hardened-steel, chisel-like device that’s driven into the nut to split it. When it comes to removing frozen and rusted fasteners, if you’ve got the will, there’s usually a way.