Building
Factorization makes a few extra vanilla building blocks available for crafting.
Firstly, the all-bark forms of certain woods are available. Crafting four logs in a shapeless recipe will create them.
Non-vanilla logs may occasionally have all-bark recipes available.
Flat sandstone can be made out of 2 sandstone pillars.
Two stone slabs can be crafted together to make double half slabs, and two double half-slabs can make flat stone.
Four dirt can be combined to make dry dirt (also called Coarse Dirt), which grass will not spread to.