The Sawmill building converts Timber taken from forests to planks which have a variety of uses. Planks are used by: Toolworks, Coal Mines, Ore Mines and the Ruined Church Quest.
The base unit of the Sawmill consumes 3 Timber and produces 2 Planks every tick. A fully upgraded Sawmill will consume roughly 9.13 Timber and produce 8.43 Planks every Tick.