I did a quick search and did not find anything about this. Sometimes it can be a little bit of a pain to craft items, in a specific quantity. I understand the enhancer mechanic, and this does not replace it. Instead what I am suggesting is a way to stop a Factory when it creates X amount of an item. I'm thinking of a check box and a number box, when the check box is checked it will only create the amount in the number box. If the check box is not checked, the factory will function as usual. These two GUI components would be added the the factory menu.