This guide details the Volcano Forge in Stardew Valley 1.6, explaining how to enhance tools and weapons.
Obtaining Cinder Shards: The Volcano Forge requires Cinder Shards. These are obtained by:
Cinder Shards cannot be created in a Crystalarium.
The Mini-Forge: After achieving Combat Mastery, craft a Mini-Forge (5 Dragon Teeth, 10 Iron Bars, 10 Gold Bars, 5 Iridium Bars). It functions identically to the Volcano Forge.
Weapon Forging: Weapons can be forged up to three times, increasing stats. Each forge requires Cinder Shards (10, 15, 20) and a gemstone:
Amethyst: +1 Knockback per forge.
Aquamarine: +4.6% Crit Chance per forge.
Emerald: +2/+3/+2 Speed per forge.
Jade: +10% Crit Damage per forge.
Ruby: +10% Damage per forge.
Topaz: +1 Defense per forge.
Diamond: 3 random upgrades (10 Cinder Shards).
Best Weapon Upgrades: Emerald & Ruby (for DPS), or Topaz & Amethyst (for survival).
Unforging Weapons: Place the weapon in the left slot and select the red X to remove all forging (some shards recovered, gemstone lost).
Infinity Weapons: Upgrade Galaxy Sword, Dagger, or Hammer using 3 Galaxy Souls (20 Cinder Shards each). Keeps existing upgrades/enchantments.
Galaxy Souls: Obtained from Mr. Qi (40 Qi Gems), Big Slimes (Dangerous Mines, Mr. Qi quests), Island Trader (10 Radioactive Bars), or as rare drops from Dangerous Monsters (after 50 kills).
Enchantments: Apply random effects using a Prismatic Shard and 20 Cinder Shards. Re-enchant for a different effect.
Weapon Enchantments: Artful, Bug Killer, Crusader, Vampiric, Haymaker. Bug Killer and Crusader are generally most useful.
Innate Enchantments: Use a Dragon Tooth for additional enchantments (Slime Slayer, Crit Power, Attack, Speed; Slime Gatherer, Defense, Weight are possible secondary enchantments).
Tool Enchantments: Various enchantments for Axe, Pickaxe, Watering Can, Hoe, Fishing Rod, and Pan (see guide for details). Choose enchantments based on play style.