Drill arm

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Drill arm

Drill arm

A mechanical arm replacement for speeding up mining. It has a built-in snake drill, which allows the miner to rapidly find and exploit weak lines in the rock. It also has a general-purpose manipulator. It is somewhat ungainly, which slows down movement slightly.

Base Stats

Medical ItemsBody Parts
Market Value
425 Silver.png

Melee Combat

Melee Attack 1
13 dmg (Stab)
2 seconds cooldown
20% armor penetration
Melee Average DPS
Melee Average AP


Skill required
Crafting 5
Work To Make
15,000 ticks (4.17 mins)
Resources to make
Steel.png 60 + Component.png 8

The Drill Arm gives a pawn that's been implanted with it +160% Mining Speed, +70% Deep Drilling Speed, and -8% Moving.


Drill arms can be made at a machining table once Specialized Limbs has been researched. Crafting one requires Steel.png 60 Steel, Component.png 8 Components, 15,000 ticks (4.17 mins) of work and a crafting skill of 5.

They can also be bought from Outlanders and Empire settlements.


The drill arm can be installed on pawns if one needs a lot of mining or deep drilling done quickly. The effect is especially potent for pawns with traits that modify global work speed, as the +160% / +70% bonus is added before multiplicative modifiers.

Example: a healthy pawn with a mining skill of 8 (x100%), a single drill arm (+160% for mining / +70% for deep drilling), a combination of very neurotic and industrious traits (x(40+35)%) in a lit environment will have: (100% + 160%) x 100% x 175% = 455% mining speed or 170% x 100% x 175% = 298% deep drilling speed. This already greatly speeds up work, while a second drill arm will result in 755% mining / 420% drilling speed, which is likely an overkill unless one needs a lot of resources mined quickly.

The field hand, a plant work - oriented counterpart, has the same behaviour in terms of bonus speed calculation.


Its attack have 20% AP and 6.50 DPS.

Version History

  • Royalty release - Introduced
  • 1.1.2565 - part efficiency 50% -> 100%, boost 180% -> 160%, movement penalty,