You should Sell the designs to a Company that would be interested in Manufacturing and selling that stuff. I would buy it in a heart beat. You know that you could get payed a lot! People want stuff like this, so when a company needs the designs for the stuff, they will pay a lot for it, hoping to make a lot from selling it. Not to mention, you will be credited, and become very famous and popular among the Steam Punk community, if you aren't already.