Birch, Jungle, Spruce and oak logs burning times are incorrectly calculated in craftguide. This wouldn't be much of a dealbreaker, other than the fact that smelting ore in an oven is extremely time-sensitive, and it makes the difference between coming home from your trip to an empty oven with a smelted nugget or an empty oven with a chunk of ore that you have to re-cook once again.
The correct values are:
Birch fuels 10 items, oak fuels 8, spruce fuels 6, jungle fuels 4.
That said, Birch and jungle are said to smelt the same amount of items (20) while oak and sprice are said to smelt the same amount of items (16).

The logs from the Deco addon are likewise incorrect for the most part: with only Acacia being correct, and Dark Oak having the same amount of smelts as spruce while being reportedly (12).
Birch, Jungle, Spruce and oak logs burning times are incorrectly calculated in craftguide. This wouldn't be much of a dealbreaker, other than the fact that smelting ore in an oven is extremely time-sensitive, and it makes the difference between coming home from your trip to an empty oven with a smelted nugget or an empty oven with a chunk of ore that you have to re-cook once again.
The correct values are:
Birch fuels 10 items, oak fuels 8, spruce fuels 6, jungle fuels 4.That said, Birch and jungle are said to smelt the same amount of items (20) while oak and sprice are said to smelt the same amount of items (16).

The logs from the Deco addon are likewise incorrect for the most part: with only Acacia being correct, and Dark Oak having the same amount of smelts as spruce while being reportedly (12).