I've created a recipe for a new ingot and I want it to be only allowed to be created at a specific smelter. At the moment it cam be made at any smelter - well I am guessing it can, I duplicated a smelter, renamed it and can make it there so I'm sure the recipe will be available to all smelters - how can I make "My Smelter" exclusive? Conditions maybe?

You could add a condition function to your COBJ recipe. Something like: "GetDistance [Your Smelter] < 10.0", Run On the player

Sorry, I'm not quite understanding that.