In the world of manufacturing, the joining of aluminum (a very soft metal) with cemented carbide (a very hard metal) is considered as impossible as it is desirable. If the two could be joined, it would constitute a manufacturing revolution. The two leading methods would be by using screws, or by brazing, a process of melting a filler metal to act as an adhesive. So 2 teams each try one of those methods, and we see which set of joined metals is tougher to pull apart. The 2 teams rise to the challenge, displaying fantastic skill. This is the showdown!