Block of Manyullyn is a block added by Tinkers' Construct. Block of Manyullyn is primarily used as a storage block for Manyullyn Ingots but may also be used as decoration.
Block of Manyullyn cannot be crafted like vanilla Minecraft material blocks, but must be crafted by pouring 1296mB of Molten Manyullyn in a Casting Basin from a Smeltery.
They may be broken down by the use of a Crafting Table to produce 9 Manyullyn Ingots. With 4 Blocks of Manyullyn a Manyullyn-legged version of the Tool Forge can be crafted, which is purely aesthetic.