This mods adds a single simple block - the Compacter.

• It will try crafting input items in either 2x2 or 3x3 pattern (configurable in the GUI) and output the result.
• It will process unlimited items per tick, as long as there enough items and energy provided.
• You can set it to work only when redstone signal is applied (configurable in the GUI).
• Recursive compacting mode can be enabled from the GUI which will try combining outputed items again (for e.g. compressed cobble).
• The compacter will use RF or EU power for every operation.

This mod requires a recent version of BDLib and either IC2 (experimental) or any RF mod (Thermal Expansion, EnderIO, etc.) for power.

Minecraft 1.12 version also supports Tesla and Forge Energy power.

Open Source

The mod is licensed under the MMPL-1.0, the source code is available on GitHub.
Yes this means you have permission to add it to any public or private mod pack.