This is one of the craziest things I’ve ever seen. Normally, I have a vague idea how stuff works, but this is totally beyond my comprehension.
I wonder how this will change copyright laws. Imagine getting an expensive pair of designer sunglasses and then just making a 3D copy instead of buying another pair. Or what about printing out casino chips? When these eventually come down in price and become available to your average consumer, expect to see a lot change with regards to who owns the copyright/patent for a physical object.