Leather Knapping

import mods.terrafirmacraft.leatherKnapping;

leatherKnapping.addRecipe(String registryName, IItemStack output, String... pattern);

leatherKnapping.removeRecipe(IItemStack output);
leatherKnapping.removeRecipe(String registryName);

// quiver recipe
leatherKnapping.addRecipe("recipe", <tfc:quiver>, " XXXX", "X XXX", "X XXX", "X XXX", " XXXX");