"Put beard pieces into forge" is an objective in the side quest The Beard Makes The Man in Tiny Tina's Assault on Dragon Keep DLC.
Walkthrough[edit]
With the 5 Dwarven Beards head to the South through the Underground Dwarven City to the South. You will have a number of Dwarves and Golems to fight. When you make it back to Ingot Processing, you will see the forge that you need for this mission. Approach it to find the Gilded Forge.
Approach the forge and place the 3 beard pieces where they need to go.
