Shapeways concepts

You can use a 3-d printer in many ways useful ways but, sometimes you can use it in pretty bad ways. A good way is that you can make body parts that you can transplant into humans and they can work. Another way that is good is that you can print food that you can eat without wasting gas or having to spend that much money over time. But a bad thing that you can make with it is that you can make gun parts that work and it matters if you are protecting or trying to kill so it matters what you are doing with the parts or the things that you print