This changes everything. Or at least it will.
"Printing" a wrench.
More info.
Right now these are going for $60,000. When I was in high school laser printers were wall sized devices that cost hundreds of thousands. I wanted one of my own. Now I have one that costs about a hundred bucks and prints better quality faster than those wall sized models.
Can you imagine what this will be like when we can print objects? Need a copy of your car key? Press Print. Glasses frame broke? Press Print. Need a different sized screwdriver? Press print.
This is going to keep an army of patent attorneys busy for generations.