Chute (BuildCraft)

The Hopper in BuildCraft provides a method of storing additional items before they are placed into an engine, a machine, or a storage chest. It prevents overflow of items from spilling onto the ground. However, if the hopper itself is completely filled, items will spill onto the ground anyway.

Usage
The hopper can be placed over any block that has some sort of storage compartment, such as a machine, an engine, or a chest. Items are pumped into the hopper with pipes, and the items will automatically filter down into the attached compartment when there is space. Multiple hoppers can be stacked on top of each other to provide additional storage, and items will filter all the way down into the attached compartment. If the hopper is completely filled and items continue coming in, items will then spill onto the ground.