Customize

General
To customize something in Guild Wars means to attune an item to a specific character. This makes the item only usable by that specific character (or their heroes).

Effect of Customization
There are two kinds of customizations in the game:
 * Weapon Customization: When a weapon is customized for a character, it deals 20% more damage. The draw back is that no other character (even for the same account, or a new character with the same name) will be able to use it (except that character's heroes). This makes its resale value next to nothing. If you get a weapon that you plan to use for the long run, then it's a good idea to customize it, especially for warriors, assassins, paragons, dervishes, and rangers who rely on dealing damage with their weapons. If you plan to sell the weapon, then do not customize it, since customization cannot be removed.
 * Armor Customization: Any armor crafted in the game will be customized specifically for the character that purchased it. This is by design and there is no way to avoid it.

Note: A customized item will have the phrase "Customized for ..." in its description when the mouse is hovered over it.

Note: Weapons that have been customized for a character can be used by any Hero bound to that character, allowing them to share the bonus damage. However, you cannot customize a weapon that is currently being equipped by a hero. All other rules regarding customized weaponry still apply.

Note: Putting a customized item in the storage, deleting the character, and then making another with the same name, profession, hair, skin color, etc. does not let you use the customized item with the new character.

How to Customize

 * Weapons: This is done by going to a Weapon Crafter in a city or outpost. In the merchant window that appears there will be a tab called Customize. Click on it and choose the weapon in your inventory that you wish to customize then click on the Customize button at the bottom of the screen. Your currently equipped weapon will also be displayed as one of the options. Weapon Customization always costs 10 gold.
 * Armor: Armor will always be customized.

Other Players' Customized Items
As mentioned above, a player cannot use an item customized for a character other than the one he/she is playing with. Customized items can be sold to merchants (for prices far below what it cost to craft them). They can also be salvaged for materials, weapon upgrades, or runes, perhaps the only value one will get from a customized weapon. If you wish to sell your weapon, salvage the inscriptions, craft or get an inscribable weapon and re-add the inscriptions to it.