Fuel

Different materials have different burn times and temperatures. Different processes also require different temperatures and duration. Cooking requires a temperature of 200°C, while firing a clay mold requires a temperature of 700°C. Melting ores, metals, or glass requires much higher temperatures.

Wood

All logs and planks burn at 800°C, which is a temperature high enough for cooking and firing pottery items made of blue clay. Wood does not burn hot enough to use in metal working.

Image	Wood Type	Duration (s)
	Acacia Log	89
	Bald cypress Log	72
	Birch Log	78
	Ebony Log	110
	Kapok Log	47
	Larch Log	72
	Maple Log	79
	Oak Log	98
	Pine Log	60
	Purpleheart Log	72
	Redwood Log	72
	Walnut Log	72
	Aged Log	40
	Wooden Planks Blocks	20
	Stacked bamboo	24
	Wooden Slab/Stairs Blocks	10
	Board	6

High Temperature Fuels

These fuels generate temperatures high enough to be used to fire pottery items made by clay forming, smelting ores for casting, and in smithing. Be sure to check the temperature required for your process and choose your fuel accordingly.

Image	Name	Temperature (°C)	Duration (s)
	Firewood	700	24
	Peat	900	25
	Brown coal	1100	77
	Black coal	1200	84
	Anthracite	1200	196
	Charcoal	1300	40
	Coke	1350	40

Calculating Fuel Cost

Warm up times are difficult to calculate but once warmed up the amount of fuel needed to complete a process is roughly: 30 * [Number of ore] / [duration of fuel]. The fuel needs to have a max temperature equal or greater to the ore of course.

For a stack of charcoal, you can roughly melt about 83 ore.

Alternative Fuels

Most items made of wood and cattails (baskets, chests, other furniture) will also burn in a firepit. In an emergency, you might not have the fuel you need. Before you burn your household goods, you might also use these flammable items.

Image	Name	Temperature (°C)	Duration (s)
	Dry grass , Cattails , Papyrus	600	4
	Bundle of bamboo stakes	700	10
	Torch	600	6
	Flowers and other plants	600	10
	Rot	400	12
	Fat	400	96
	Stick	300	8