The Mass Fabricator is an end-game Industrial Craft 2 machine. It requires 1,000,000 EU to generate a single item, UU-Matter. UU-Matter can be used to craft many different items, including some that are otherwise unattainable (such as Iridium Ore and water and lava source blocks).
Because of the machine's high power drain, it's recommended to have at least 1-2 HV Solar Arrays attached to it. A Mass Fabricator hooked up to an array of approximately 14 HV Solar Arrays will consistently produce one UU-Matter every 10 seconds. Sending a redstone signal to the Mass Fabricator will stop it from consuming power.
A Mass Fabricator can be provided with Scrap to lower the amount of EU required to produce one unit of UU-Matter by a factor of six. This means the Mass Fabricator only requires 166,666 EU to generate one UU-Matter. Some manual testing has shown that 32 Recyclers (without overclocking) running at once can produce enough scrap to run a Mass Fabricator consuming 512 EU/t consistently. However, due to to the random nature of scrap generation, this is an inexact measurement.
Currently, the Mass Fabricator, the Oil Fabricator, and the Terraformer are the only machines that are capable of accepting High Voltage from an HV Transformer or MFSU directly. The Mass Fabricator will explode if provided with Extreme Voltage (a packet greater than 512 EU/t), such as that from a Nuclear Reactor, or if provided with more than 500,000 total EU in a single tick.
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