Building a Mob Farm with Mob Crusher and Mob Duplicator

Capturing a Mob

Craft a Mob Imprisonment Tool. Right-click a mob with it to capture that mob inside the tool. The tool now holds the mob's type.

Duplicating

Place a Mob Duplicator. Insert the filled Mob Imprisonment Tool into the duplicator. Supply it with power and Essence (produced by a Mob Crusher killing mobs). The Mob Duplicator spawns copies of the captured mob in front of it.

Killing and Collecting

Place a Mob Crusher facing the spawn area. The Mob Crusher kills mobs in range and outputs drops plus Essence. Pipe drops into a chest with an Item Transporter.

Route the Essence back into the Mob Duplicator to keep the loop running. This creates a self-sustaining mob farm.

Power

Use a Pitiful Generator, Biofuel Generator, or a Mycelial Generator variant to power both machines. The Mob Crusher and Mob Duplicator both draw power continuously.

Notes

• The Mob Crusher also works on naturally spawned mobs without a duplicator.
• Use a Mob Detector to trigger redstone when mobs are present, if you want to gate the crusher.
• Keep the spawn area enclosed so mobs do not wander off.