Core Keeper Codex
1.2.1.5 · verified 2026-09-07

Rusty Dagger

Uncommon · item level 3

Rarity
Uncommon
Item level
3
Base damage
54
DPS
180.0 base ÷ cooldown
Attack cooldown
0.3s
Durability
233
Sell value
—
Stackable
No
Slot
Held
Object ID
8,961

What the damage number is, and what it is not

Base damage 54 is read straight from the game's files for this item at item level 3. It is the right figure for comparing weapons: across the sword line it rises 33 → 50 → 132 → 163 → 214 → 248 → 280.

What we do not publish is the number the game prints on the tooltip in a live world. This site briefly did, using a formula fitted to an outside source, and it was wrong — it produced almost the same value for every weapon in a tier ladder, rating a Copper Sword above a Solarite Sword. It has been withdrawn rather than quietly corrected. The full account is on the method page.

What it grants while held

StatValueMultiplier
Crit Chance5—

These are the condition values the game applies. The files do not label their units, so the raw value is shown rather than a percentage sign that might be wrong.

Where to get it

Best source is Glurch the Abominous Mass at 19.44% per kill — about 11 kills for a 9-in-10 chance.

SourceChance per killKills for 90%AmountNote
Glurch the Abominous Mass19.44%
111
Digging Spot2.31%
991
Copper Chest1.50%
1531guaranteed group
World Chest1.47%
1561
Large Ancient Destructible Dirt Biome1.35%
1701
Wooden Destructible1.17%
1971

Crafting

IngredientAmount
Copper Bar6

Crafting time 1s.

Total raw materials

Every ingredient expanded down to things you cannot craft.

MaterialAmount
Copper Ore6

Internal name RustyDagger. Components: AreaLevelAuthoring CooldownAuthoring DurabilityAuthoring EntityMonoBehaviourData GivesConditionsWhenEquippedAuthoring WeaponDamageAuthoring