I would be very interested in working on the device you mentioned. Curious what sort of 3d printer is required. Are we talking a RepRap level machine or more of a https:// www.protolabs.com/ level device? I feel I could simply take a 3d plan and send it to them. Tell them it is a wind chime or a water filter holder or whatever so they don't get wind of it. Hell, Just tell them it is a cold fusion device that was made with alien technology and they will laugh and make it since that is an unbelievable story. Anyway, count me in as I think that would be really fun and such a device will be required to help people when this stuff really kicks off. I love building things… Lastly, I heat my water at the hobo camp with wood in a rocket stove with a heat exchanger and that sucks so I want this for myself ha ha.