The Blueprint is a type of IRecipeManager and implements all the methods that are available to IRecipeManager's, such as removeRecipe() and removeAll().

Blueprints use different categories to determine what type of Blueprint is needed, you can use:

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/ct dump ieBlueprintCategories

to print all the known categories to the CraftTweaker log file.

With Immersive Engineering alone, the following is printed to the log:

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- bannerpatterns
- bullet
- components
- electrode
- molds
- specialBullet

The following script will add a "bullet" Blueprint recipe that will use a piece of Redstone and any item from the Forge Gems tag and output an Iron Sword.

ZenScript
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// <recipetype:immersiveengineering:blueprint>.addRecipe(name as string, blueprintCategory as string, inputs as IIngredient[], output as IItemStack)

<recipetype:immersiveengineering:blueprint>.addRecipe("test_gaps", "bullet", [<item:minecraft:redstone>, <tag:items:forge:gems>], <item:minecraft:iron_sword>);

The following script will remove all Blueprint recipes that output a Casull Cartridge.

ZenScript
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// <recipetype:immersiveengineering:blueprint>.removeRecipe(IItemStack output)

<recipetype:immersiveengineering:blueprint>.removeRecipe(<item:immersiveengineering:casull>);