IC2 Compressor
The Compressor compresses numerous materials into new items, for example: Mixed Metal Ingot → Advanced Alloy, Raw Carbon Mesh → Carbon Plate, Uranium → Refined Uranium, Water Cell → Snowball → Ice and finally Coal Chunk → Diamond.
Compressor Recipe
The compressor requires six stone in total, a machine block and an electronic circuit. Three stone on each column; the left and right. Then the center column in the center has a machine block with a electronic circuit underneath it.

Compressor Video