An Orb of Fusing is a currency item that can be used to re-roll the links between sockets on a weapon or piece of armour. The colour and number of sockets remain unchanged.
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Orbs of Fusing are uncommon currency items that can be dropped by slain monsters, chests, and destructible containers. They also drop from Arcanist’s Strongboxes.
Orbs of Fusing may be obtained from vendors. Yeena sells an Orb of Fusing in exchange for 4 Jeweller’s Orbs.
Orbs of Fusing are primarily used to modify the linked sockets on an item. If an item has some quality, each 1% quality improves the result by 1%. While the chance of obtaining three or four linked sockets is relatively high, the chance of obtaining five or six linked sockets is very low, and on average requires hundreds or even thousands of attempts.
A test involving 100 000 Orb of Fusings concluded that 836 to 1244 (average 1000) Orb of Fusings are needed to six-link a six-socketed, 20% qualitied item with a 95% confidence interval. This translates into a ~77% chance to six-link within 1500 Orbs of Fusing.
This means it is statistically not worthwhile to use the Artisan’s Bench provided by Vorici instead of using Orbs of Fusing manually, but it is still an option to consider for risk-averse players to avoid randomness.
Historically, lead developer Chris Wilson has stated that the odds for six linked sockets were very close to 1/1500. Note that this was prior to the item quality effect change from version 2.2.0 though, which means the consumed quality back then was able to improve these odds by “more than double”.
These crafting options are available on the Crafting Bench:
|Two Linked Sockets||2||1x Orb of Fusing|
|Three Linked Sockets||2||3x Orb of Fusing|
|Four Linked Sockets||3||5x Orb of Fusing|
|Five Linked Sockets||4||150x Orb of Fusing|
|Six Linked Sockets||7||1500x Orb of Fusing|
These recipes can also be applied to corrupted items at the cost of using one Vaal Orb for every Orb of Fusing required. This is currently the only way the links on a corrupted item can be modified.
One can also sell Clarissa an Orb of Fusing in exchange for one Orb of Chance.