There is a new update for 1.5.2, and an update to 1.6.2 as well. 1.5.2 adds the ability to smelt vanilla tools and armor down for their raw materials in a pressure vessel. it also adds soul sand to the sifting machine.
the 1.6.2 update simply takes those changes and pushes it into 1.6.
the 1.6.2 update simply takes those changes and pushes it into 1.6.