I don't think 3D Printing will fully take off until someone can come up with some sort of invention to allow people to print large items at home without needing an entire room for their 3D Printers.

The problem with today's consumer level 3D Printers is that they are too small to print anything larger than a a foot in each direction.

I would think there would be a way to do this without needing a printer that is the same size as the object being printed. Perhaps some sort of belt, or easy process in which objects could easily be fused together in a precise fashion.

I think there will be a solution, but I don't know what it will be or when it will be discovered.

What do you guys think?

Marty