So I know that mass creation was a thought. What if we made it its own thing? A Production Line placeable that required it be placed in a home. You would put a blueprint and materials in and it would construct until it ran out more or less. The person could need to remain there while it ran.
It would be the next step up from crafting benches. Could add the drawback that it only accepted scrapped materials if you wanted.
Or it could give less xp or even no xp as the machine was doing the work not the person.
Then the machine itself or the blue prints could have durability(probably the blueprints).
We could add blueprints to any of their respective crafts or made them purchasable items