barker takes care of offering us a unique object, a kind of wooden stick called Barkifier, which is able to remove the interior textures of wooden blocks, of any kind. That is, with this object we can have blocks of wood that have the texture of tree bark on all six faces of the block.
Without this mod, the wooden blocks have sides, four faces, with the texture of the bark of the tree. While the top and bottom layer of a wooden block shows the texture that simulates the inside of the tree. Well, with this mod, we can use the Barkifier to turn all six faces of wooden blocks into bark.