Factory (Multiblock)

Basically large furnaces with queues.

Basic Factory
Requires a Basic Factory Energy Cluster to serve as energy buffer, even if powered by external means.

Can smelt two different inputs at the same time.

Usage
Put the cluster in, then smelt ores!

Advanced Factory
Requires an Advanced Factory Energy Cluster to serve as energy buffer, even if powered by external means.

Can smelt four different inputs at the same time.

Usage
Same as the other.

Trivia

 * Their sound is actually just the vanilla Minecraft minecart slowed down.