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Use unwanted weapons and Tempered Steel to upgrade your weapons.

UI Terms

Introduction

Use unwanted weapons and Tempered Steel to upgrade your weapons. is a UI Terms entry in the Sword Art Online: Echoes of Aincrad (SAOEoA) wiki, with game data, related records, and update information for strategy lookup.

Info

Author成田真理

CategoryUI Terms

Updated7/13/2026

Use materials to create new weapons and armor.

Combine two weapons and their EX-MODs into one weapon.

UI Terms

Synthesis Cardinal Rank Sell Use materials to create new weapons and armor.Combine two weapons and their EX-MODs into one weapon.Select a weapon to use as a base for synthesis.Select a weapon to use as the material for synthesis. (This weapon will be lost.)Select the EX-MOD you wish to combine with the base weapon.

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