Fuel

Liquid — Coal touching Steam makes Fuel. For Coke, seal it behind stone and heat the Fuel to 115 C with a wood fire outside. The Flint Striker stops at 110 C; wood ember reaches 130 C, below Fuel's 135 C ignition point. Keep embers from touching Fuel; a gas sieve can vent larger batches.

Behaviour

Density

160

Spread

up to 3 cells sideways per frame

Viscosity

refuses to flow sideways 90 frames in 255

Stops shots

a shot spends pierce crossing it, so depth stops one

Heat

Conducts heat

45 of 255

Thermal mass

holds 2× the heat, so it stays hot long after it stops being heated

Also becomes

• Coke — sealed away from air and flame and heated to at least 115 °C, two cells of fuel become one of coke and one of coke gas
• Coke Gas — the other half of coking, and it needs somewhere to go — vent it through gas sieve

How to get it

• made when Coal touches Steam

What it is for

• Jetpack Mk I — 4× Iron + 2× Rubber + 1× Fuel — at the Anvil
• Jetpack Mk II — 4× Steel + 2× Rubber + 2× Fuel — at the Blast Furnace
• Jetpack Mk III — 4× Titanium + 3× Rubber + 3× Fuel — at the Assembly Table

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