Hello,
I just saw the Blast Furnace and Smoker crafttweaker support doesn't allow the specified the output for a specific input. I think you should add the possibility to choose the output and not just the input.

By example, in my modpack, when you cook any ores in a furnace you get only 2 nuggets, but in the blast furnace you still get 1 ingot... Presently, there have no way with the crafttweaker support to fix that issue...

Thank's

What mod are you using to change the original furnace recipes? I use the exact same recipes as the regular furnace, and my CraftTweaker functions allow for whitelisting certain furnace recipes so that the Blast Furnace is not restricted to ore recipes.

You shouldn't need to add specific outputs to the blast furnace, as it is not a separate machine from the furnace. If all was working as intended, recipes you change in the normal furnace would also change in the Blast Furnace / Smoker.

Oki, this is completly my bad... I just test to cook an Iron Ore Cluster in the Blast Furnace and it give me only 2 nuggets, but when I cook an Iron Ore Block, I get 1 ingot instead, but I test in the furnace and it does the same. So, I think, the problem is with my Crafttweaker script for changing the furnace recipes... Look like i use IItemStack instead of using OreDict entries...

Sorry to open that issue for a bug in my modpack, and not with with your mod.