This week on Forged in Fire, the masters compete against their own apprentices using the jelly-roll technique.
The task this week is to make a cleaver utilizing the method, which involves taking seven to 13 layers of steel and then flattening them out into a strip.
This is later heated up and rolled into a jelly roll shape, before being welded together with pressure.
This results in some stunning patterns on the metal and is a technique often seen in Damascus steel and decorative weapons.
The finalist this week will be tasked with forging a Congolese axe known as a Nzappa Zap.
You can see demos of the jelly-roll technique by Big Dog Forge and Ed Caffrey in the YouTube videos below.
Forged in Fire airs Tuesdays at 9/8c on History Channel.More: Forged In Fire