Rubber Wood is the component of Rubber Trees. It can be extracted into 1 Rubber. Sometimes (25% per log max 3 holes per tree), Rubber Wood blocks have a Resin Hole (see image to the right). Right clicking the spot with a Treetap will produce 1-3 Sticky Resin, which can be smelted into 1 Rubber each in any furnace or extracted in an Extractor into 3 Rubber.
Be aware that right clicking an empty (dark) Resin Hole may produce extra Resin, but is very likely to permanently remove the Resin Hole. Therefore, it is advised to be careful when extracting Resin.
Rubber trees spawn only inside swamp and forest biomes and cannot be found in other biomes.Rubber trees have dark colored wood, like Pine, with bright leaves similar to Birch, and have a unique 'wing' in the leaf pattern. A screenshot of the tree and distinctive leaf pattern can be seen here: imageshack.us
Sapling drop rate from leaves is 2.8% average three have ~50 leaves blocks.
Rubberwood blocks cannot be moved by pistons.
Rubber Wood can either be extracted for Rubber, or turned into normal Logs or Planks. It is also used in crafting an Empty Booze Barrel