Forge
 Warning: Spoilers  This page or section contains unmarked spoilers from update 1.6 of Stardew Valley. Players may want to avoid or be cautious toward reading this article/section. |
The Forge in the volcano caldera on Ginger Island lets you upgrade weapons, enchant weapons and tools, combine rings, and change weapon appearances.
Weapon forging
You can forge a melee weapon (dagger, hammer, or sword) up to three times to improve its stats. Each forge costs one gem, and 10/15/20 cinder shards depending on the forge level.
Using a 
Diamond as the gem fills all remaining forge levels with random upgrades, but only consumes 10 cinder shards.
| Gem | Effect |
|---|---|
 Amethyst
|
More  knockback (adds 1 per level).
|
 Aquamarine
|
More  critical hit chance (adds 4.6% × level).
|
 Emerald
|
More  weapon speed (adds 2 on the first and third level, 3 on the second level).
|
 Jade
|
More  critical hit damage (adds 10% × level).
|
 Ruby
|
More  damage (adds 10% × level to both min and max damage).
|
 Topaz
|
More  Defense (adds 1 × level).
|
Enchantments
You can add a random enchantment to any weapon or tool (except Copper Pan, Return Scepter and Scythes). This costs one 
Prismatic Shard and 20 Cinder Shards.
Each weapon or tool can only have one enchantment, and you can't choose which one will be applied, but you can repeat with another Prismatic Shard to re-randomize it. Tools track the previous two enchantments applied to them so they're not reselected when you reapply an enchantment.
Enchantments are randomized based on the number of times you've enchanted any tool, so reloading the day and enchanting a different tool will change the progression.
Combat enchantments
Only applies to melee weapons (can't be applied to a slingshot)
| Name | Effect |
|---|---|
| Artful | 50% cooldown on special moves. |
| Bug Killer | Double damage to grubs, flies, bugs, Spiders, rock crabs, allows killing armored bugs. |
| Crusader | 50% more damage to mummies, ghosts, skeletons, and void spirits. Prevents mummies from reviving. |
| Vampiric | 9% Chance to regain some health on kill. Amount healed is 9% to ≈10.67% of monster's maximum health and does not scale with weapon damage. |
| Haymaker | When cutting weeds, you get more fiber, and also a chance to collect hay. Cutting weeds has a 50% chance of also dropping a fiber, and 33% chance of extra hay (directly into silo on farm, else into inventory). |
Tool enchantments
| Name | Axe | Rod | Hoe | Pick | Can | Effect |
|---|---|---|---|---|---|---|
| Auto-Hook |  |
Automatically hooks fish/junk when they bite (which starts the fishing minigame if it hooks a fish). | ||||
| Archaeologist |  |
Double chance of finding artifacts in artifact spots. | ||||
| Bottomless |  |
Infinite water. | ||||
| Efficient |  |
|
|
 |
|
No stamina drain. |
| Generous | |
50% chance of double item after digging. | ||||
| Master | |
Adds an extra fishing level to the player while held. | ||||
| Powerful | |
|
Add 1 extra power level for pickaxe, 2 for axe. | |||
| Preserving | |
50% chance that bait and tackle aren't consumed on use. | ||||
| Reaching | |
|
Increased charge-up capacity for greater area of effect. Increases the maximum area of effect to 5x5 tiles. | |||
| Shaving | |
Extra 3 regular wood from Oak, Maple, Pine, Palm, and Mahogany trees. 3 wood from Mushroom trees. Chance of extra hardwood from stumps. Chance of extra produce from giant crops. | ||||
| Swift | |
|
|
Tool use is 33% faster. |
Infinity Weapons
You can forge a Galaxy Soul into a galaxy weapon at the cost of 20 Cinder Shards. Doing this 3 times (at a total cost of 3 Galaxy Souls and 60 cinder shards) will turn the weapon into a more powerful "Infinity" weapon. Less or more Galaxy Souls do nothing. The weapons keep their enchantments and forgings when they are made into Infinity weapons.
| Image | Name | Description | Ingredients |
|---|---|---|---|
 |
Infinity Blade | The true form of the Galaxy Sword. |  Galaxy Sword (1) Galaxy Soul (3) Cinder Shard (60)
|
 |
Infinity Dagger | The true form of the Galaxy Dagger. |  Galaxy Dagger (1) Galaxy Soul (3) Cinder Shard (60)
|
 |
Infinity Gavel | The true form of the Galaxy Hammer. |  Galaxy Hammer (1) Galaxy Soul (3) Cinder Shard (60)
|
Weapon Appearance
You can merge two weapons through the forge. The resulting weapon will have all the stats and info of the first weapon, but the appearance of the second weapon. You can only merge weapons of the same type (e.g. you can't merge a hammer with a sword), and can't merge slingshots.
This costs 10 cinder shards, and consumes the second weapon.
Combined Rings
You can combine two different rings into one with stacked effects. This costs 20 cinder shards.
This has two restrictions:
- You can't combine two of the same ring into one. (You can combine two different rings with the same effect though, like Glow Ring and Glowstone Ring. Their effects will stack in the same way as wearing both rings separately.)
- You can't combine three or more rings into one (i.e. a combined ring can't be further combined).
Unforge
For a weapon, unforging removes all forge upgrades (but not enchantments) and resets its appearance. This is free, but only recovers some of the Cinder Shards used to forge it.
For a combined ring, unforge splits it back into the original rings.
To begin the unforging process, place the item that you want to unforge into the left square slot. Then click the red ⨯ symbol near the bottom right corner. The unforged item(s) will appear in your inventory.
Fishing
The Forge is the only level of the Volcano Dungeon where fishing can occur. It is one of two locations in the game where players can catch Lava Eels.
Crab pots cannot be placed in the forge.
When fishing there is a chance the player can reel up a present labeled "???" that contains the painting 'Physics 101'.
Secret
After achieving 100% Perfection, you can interact with a red monkey to obtain a secret hat.