Factorio Forums

While not exactly game breaking the exploit is against the spirit of factorio.
What to do:
You need a boiler, a piece of wood and a nuclear fuel.
1.) Stick the nuclear fuel into the boiler
2.) After the boiler has started consuming. Leftclick with wood in hand to quick replace the nuclear fuel
3.) You have recovered all of the 1.21 GJ fuel value and the tricked boiler keeps running on "nuclear wood" with 1.21GJ

There is no reason to believe this fuel value exploit would not work with other fuels or burners.
It maybe even be very useful for a race to the end of the map with plenty of wood and one nuclear fuel.

The core of the exploit is that the player is allowed to quick replace the currently consumed fuel in the fuel slot.

[Edit] A possible mechanic to fix the exploit would be to simply add the dropped fuel value onto the currently consumed fuel
and only if the consumed fuel is completely recharged it goes to the hand and the new fuel is dropped with a reduced fuel value.
If the new fuel has insufficient fuel value it will simply recharge the currently consumed fuel a bit and vanish.

HI,

The fuel item is consumed immediately after energy is needed from it,
The item in the inventory is just the 'next item to burn', so it is no problem to swap it out, and there is no exploit.

I see. That explains why it looks as though the wood would burn like nuclear fuel