The Design2Part show is coming to Kissimmee October 19 and 20 at the Gaylord Palms Resort.  This is where manufacturers and fabricators come to show you what they can do.  They are looking for you and want to build your invention.  Even if you are not ready to manufacture it is a great place to get a feel for the technology and likely costs you will encounter.  You need to go here to help finish your business plan.