Ok so basically i am creating a sawmill(A custom furnace).I have made it so that it will only use set recipes.I am wondering how i would go about making it so that oak logs creates oak planks and spruce wood creates spruce planks ect.So if anyone could give me an idea on how to do this as i have spent a good amount of time trying to do this but i have no idea how to do it.

I have a custom furnace tutorial here: http://jabelarminecraft.blogspot.com/p/minecraft-modding-containers.html

 

Note that it is for 1.8, so you might need to adapt bits of it for 1.7.10 or earlier.  But it should give you the general idea.

 

For recipe part you can either implement actual recipes, or just use basic logic in your Container class. In either case, the Container should check what is in the input slots and if some conditions are met (match a recipe, or you can use if statements) you update the output slot.

Yea sorry to say that for some reason that does not work.

When it does not work, you should provide some detailed description on that, like crash report, or the symptom.

    this.func_151393_a(Blocks.log,0, new ItemStack(Blocks.planks, 1, 0), 0.15F);

    this.func_151393_a(Blocks.log,1, new ItemStack(Blocks.planks, 1, 1), 0.15F);

    this.func_151393_a(Blocks.log,2, new ItemStack(Blocks.planks, 1, 2), 0.15F);

    this.func_151393_a(Blocks.log,3, new ItemStack(Blocks.planks, 1, 3), 0.15F);

    this.func_151393_a(Blocks.log2,4, new ItemStack(Blocks.planks, 1, 4), 0.15F);

 

these are the 5 recipes but i want oak wood to become oak wood planks.I have tryed quite a few things but none of them seem to work.

Anyone got a solution.

Ok thanks for telling me that.Now i will see if i can fix it using that.