David Muir shares details on the new National Geographic special and the minute-by-minute timeline the team reconstructed from the first-of-its-kind full-size 3D rendering of the ship's wreckage.

The contraption holding the angle grinder – a welded piece of steel ... The build video shows the entire process, from drill pressing and turning holes to welding pieces of the frame together ...

Affordable plasma cutters are becoming a popular step up from an angle grinder for cutting sheet ... and is powered by an old cordless drill with the handle cut off. Its trigger switch was ...