Ore dulication using diffrent kinds of fuel

we can duplicate ores if we use the grinder but a full stack can give more from the original using the furnace grinding coal can be used as fuel lava can be used as fuel lasts longer then anitheng els

(Recommendet for begginers)
start up simple anitheng can be possible if you just collect resorces that you need for machines

Using lava as fuel is a sin.