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Cosmic Knife Clean

The Cosmic Knife Clean is a weapon in the Fallout: New Vegas add-on Dead Money.


The Cosmic Knife Clean is a melee weapon almost identical in appearance to the standard variant, except all the Cloud residue has been cleaned off, revealing a smooth, shiny blade.

The Cosmic Knife Clean's chief benefit is that it inflicts triple damage on limbs, twice that of the unclean original and nearly twice that of the super-heated version. It also features slightly higher base damage and critical chance.

Special attack

It has a special Surgical Strike attack, which does 150% damage in V.A.T.S. at the cost of 5 more action points (requires a Melee skill of 50).

Type of attackSkill requiredDamage per attack in V.A.T.S.Action point costDamage per action point
Surgical Strike5045251.8
Type of attackType of attackSkill requiredSkill required
Damage per attack in V.A.T.S.Damage per attack in V.A.T.S.Action point costAction point cost
Damage per action pointDamage per action pointAdditional effectsAdditional effects
Note: Melee weapons do double normal damage in V.A.T.S.

It is possible to execute Surgical Strike outside of V.A.T.S. (without the required Melee skill of 50 to perform the move) by initiating a power attack (hold attack button) while moving forward.


The Cosmic Knife Clean can successfully strike about 995 times from full condition before breaking.


This weapon must be crafted by the player character. It cannot be found on enemies or in containers. This weapon is also used in the crafting of the Knife Spear Clean.

Creation requirements

Build/Scrapped at:
Skill Level:
Repair: 25



Weapon name (current weapon is highlighted) Weapon name (melee or unarmed) Weapon name (current weapon is highlighted) Weapon name (gun, energy or explosive)
Damage per attack (damage per projectile) Damage per attack (damage per projectile) Damage per second Damage per second
Area of effect damage Area of effect damage Effect damage & duration Effect damage & duration
Bonus effects Bonus effects Attacks per second Attacks per second
Critical chance % multiplier Critical chance % multiplier Critical damage Critical damage
Critical effect damage & duration Critical effect damage & duration With all mods attached With all mods attached
Attacks in V.A.T.S. Attacks in V.A.T.S. Action point cost Action point cost
Damage per action point Damage per action point Weapon spread Weapon spread
Magazine capacity (shots per reload) Magazine capacity (shots per reload) Durability (number of attacks before breaking) Durability (number of attacks before breaking)
Weight Weight Value in caps Value in caps
Value to weight ratio Value to weight ratio Skill required Skill required
Strength required Strength required
Weapon name (current weapon is highlighted)Damage per attack (damage per projectile)Damage per secondBonus effectsAttacks per secondCritical Chance % multiplierCritical damageAction Point costDamage per action pointDurability (number of attacks before breaking)WeightValue in capsValue to weight ratioSkill requiredStrength required
Cosmic Knife 12
36x1.5 limb Damage3x112201.27451353501
Cosmic Knife Clean 15
45x3 limb Damage3x1.215201.59951505001
Cosmic Knife Super-Heated 14
42x1.7 limb Damage3x514201.47451505001
Note: Melee damage is doubled in V.A.T.S.


It can only be obtained through crafting.


  • PCPC Playstation 3Playstation 3 Xbox 360Xbox 360 The Cosmic Knife Clean is not affected by the Cowboy or Super Slam! perks.
    • Repair This is fixed in version 1 of YUP.

Behind the scenes

Unused Content Shape and texture resources for the Cosmic Knife, its Clean, and Super-Heated variant are all present in the files of Old World Blues add-on, but not used. Though present, no objects in the add-on use these resources. The resources are stored within the nvdlc01 folder used by the Dead Money add-on, rather than the nvdlc03 folder allocated to Old World Blues.