How do you augment weapons in Monster Hunter World: Iceborne? Augmenting your favourite weapons in Iceborne doesn't work like it did in Monster Hunter World. You no longer grind for weapon-specific stones in order to add passive skills to your weapons such as health regen. Instead, you have to make use of Iceborne's endgame.
This guide does not contain story-related spoilers for Monster Hunter World: Iceborne, but it does detail the expansion's endgame. If you're cool with that, read on!
Monster Hunter World: Iceborne - How to Augment Weapons
So how do you actually augment you weapons in Monster Hunter World: Iceborne? Augmentation is a process that you won't be able to make use of until you're in the expansion's endgame, and it's carried out at the smithy. The endgame opens up an entirely new region called the Guiding Lands, and it's only here that you'll find the materials that you need for augmenting your weapons.
It should be noted, however, that only weapons introduced in Iceborne can be augmented in this way.
What materials do I need to augment my weapons?
The materials needed to augment a weapon depends on the weapon itself, but as stated, all of the materials that you need are found in the Guiding Lands.
In the Guiding Lands, monsters drop exclusive materials. In other words, the Guiding Lands are the only place where you can gather these items. Generally speaking, if a weapon is based upon a specific monster, you'll need that monster's Guiding Lands materials to augment it. Depending on the weapon's rank, you may even need materials from a tempered version of that monster, also found in the Guiding Lands.
But that's not all. Augmentation also requires materials found throughout the Guiding Lands via mining outcrops and bonepiles.
There are undiscovered [???] materials I need to augment my weapon - where do I find them?
Again, you'll find all the augmentation materials in the Guided Lands. If you want to augment a weapon and the required materials are not yet discovered, you'll have to continue exploring the Guided Lands.
Rarer and more powerful monsters begin to appear as you level up different regions in the Guided Lands. You may also have to increase your Master Rank in order to unlock new assigned quests. These assigned quests often introduce a new monster that may have the materials that you need.
For more information on the Guided lands, be sure to check out our full guide on the subject.