Sinks get stained, chipped, cracked or smashed - and good sinks are not cheap. But we'll show you how to fix the structure of a sink - as well as the cosmetic - and it'll look good as new. And, gas explosions are catastrophic. But before we blow up a house to show you the potential danger, we'll show you how your home's gas system works along with gas detection tips that can keep your family safe.