Destiny House of Wolves Weapons Reforging System Guide will provide you on how to use it.
Destiny House of Wolves Weapons Reforging System Guide will show you how you can do this with the different legendary weapons that are allow only for the House of Wolves Expansion. The process to go about reforging is that you will be changing the perks on a Legendary weapon at the Gunsmith, simultaneously resetting any progression.
First you will need to go to the Gunsmith, once you reach him he will now be able to reforge your weapons for the House of Wolves DLC.
What is Reforge a Weapon:
Reforges a currently equipped weapon changing its available upgrades but resetting any progression or ascension.
What weapons can you reforge in the House of Wolves:
Legendary Tower weapons, introduced in the House of Wolves can be reforged
What do you need to reforge weapons:
1 Reforge ready weapon (house of wolves) legendary weapon
1 Mote of Light
3 Weapon Parts
250 Glimmer
Any weapons for the crucible or vanguard can be reforge.
One good tip to know if your legendary house of wolves weapon is ready for forging, is by looking at it perks and seeing that you have the twin hammer you will be able to do it, however this only works for Destiny House of Wolves Expansion.