Four bladesmiths must forge a weapon using only reclaimed metal. With the clock winding down, two of the competitors are dramatically forced to improvise, and one almost doesn't make it through the round at all.

The bladesmiths must transform a steel "train spring" into a weapon of their choosing. Only two competitors will move on and are given just five days to forge a legendary Viking Battle Axe. After a barbaric round of testing from the judges, only one man will be left standing.

For this week's challenge the competitors create their signature blade by using the Hada technique--a traditional process that involves forging multiple layers of steel together. The pressure mounts as one of the smiths is pushed to his absolute breaking point.

The forge heats up as our four bladesmiths struggle create a special Japanese hardening technique on their signature blades. After a difficult first round of testing, the remaining two bladesmiths head home with just five days to forge the legendary Crusader Sword.

The forge heats up as the bladesmiths must use an age-old technique to create their signature weapons. But will their swords make the cut when the judges put them through a battery of tests? Two finalists head to their home forges to make one of history's most notorious weapons, the rapier, a sharply pointed sword that can kill with just one thrust.Source: History Channel

A steel ball bearing ends up being transformed into a weapon. The finalists have to create a historically important blade called a Roman Gladius.

The bladesmiths must forge a signature weapon using everyday steel objects like ball bearings and shovels as their only source material. One contestant puts finishing his weapon before his own safety in a heated race to the finish. Only two competitors will move on and are given just five days to forge the mystical Moro Kris Sword--a distinctive blade that dates all the way back to 300 BC.