3D Printing

So how cool is this new technology? You can print a new drone attachment that will drop paintballs on your neighbor and/or their noisy dog. You start with a big block of plastic and, instead of ink and a pen-jet thingie, a 3D printer just scrapes away the outside part of the initial block and makes really cool statues. Think: ice sculptures 3D printed every night for dinner! Really cool. But, um...do we...need this? What will the ice block carver union say?