The Compressor Table is used to protect the area from itself.
The Compressor Table is created, by copying the image shown below in a dropper that is facing up, after that you must throw a furnace on top.
The Compressor compresses and decompresses a hand full of blocks and items. I will add more compressible blocks in once people start requesting new blocks to be compressible. There is a listing of compressible blocks and items below.