In this explosive new series, four bladesmiths will compete for $10,000 and the title of Forged in Fire champion.

Four bladesmiths must forge a weapon using only reclaimed metal.

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.

For this week's challenge the competitors create their signature blade by using the Hada technique.

The forge heats up as our four bladesmiths struggle create a special Japanese hardening technique on their signature blades.

The forge heats up as the bladesmiths must use an age-old technique to create their signature weapons.

Four bladesmiths heat, hammer and grind their way through a first round challenge where they must transform a steel ball bearing into a fully functional weapon.

The bladesmiths must forge a signature weapon using everyday steel objects like ball bearings and shovels.