Four bladesmiths honor some of the greatest Americans of all times--the Presidents. First, competitors pay homage to famed adventurer, President Theodore Roosevelt, by forging a replica of his Rough Rider Bowie.

For the special 100th episode of Forged in Fire, four bladesmiths are tasked with forging a chopper and must choose from a mammoth pile of metals and materials from all previous 99 episodes.

Four smiths must think outside the box when tasked with using the dreaded canister method to forge a signature blade. After a colorful round of testing, the two finalists must recreate the Austro-Hungarian Hussar Saber.

Four bladesmiths plunge into the first round of competition where they must forge a blade using steel harvested from a vintage pinball machine. After a wicked round of testing, only two smiths advance and return home to build a weapon rooted in savagery: the Barbarian Sword.

The wheels start turning when four bladesmiths must forge friction folders from a rusty pickup truck.

Four bladesmiths take a stab at history when they are tasked with recreating an iconic fighting knife from the 20th century: the Fairbairn Sykes.

Four bladesmiths must forge signature blades from different sizes of spring steel. Competitors toil with the canister Damascus technique with varying degrees of success.

Four bladesmiths are in for a workout when they are tasked with forging signature blades from gym equipment. After a severe round of testing, the two remaining smiths have only four days in their home forges to recreate one of Japan's deadliest swords: the Nagamaki.