Rubber

Rubber is used in the proccess of creating the Cable. There is two ways to aquire this, where the most efficient way is to use an extractor and the less efficient way is to craft it.

Items required to craft rubber:
 * 3x Log (Any kind)
 * 1x Treetap

As you see, three logs and a treetap yields one rubber. Let's look at the extractor.

Items required to extract rubber:
 * 1x Extractor
 * Log
 * Power (Battery, generator, MFE etc.)