I'm a local inventor. I'm inventing a technology which is sorta 3D printerish but it makes things the size of city blocks. You basically put in whatever shape you want and it calculates a steel space frame to match that shape. We build the frames at my house. They come with instructions on every part to assemble the whole structure. Large groups of volunteers put them together by following the instructions on the parts.
My invention is as easy to use as a 3D printer, so I started teaching free classes on how to design for 3D printers using open source (free) software. The whole class is free and I think you guys would really like my invention.
I teach Blender (the open source software for 3D design). Here is a link to my group. If you like these classes, please join the group. The classes are free and open to everyone.
BRING YOUR OWN LAPTOP
Also, there is a super secret map to find the location. You'll get lost without it. Email me and I'll send you a copy. I don't know how to post it here.