A 3-D printer is different from a regular one that uses ink and paper. 3-D printers use materials such as plastic, metal, or concrete to create solid three-dimensional objects.
Today’s 3-D printers have many advantages over traditional manufacturing. For one, they allow people to make things as they need them. That can save time and money.
Take NASA, for instance. The U.S. space agency sends about 7,000 pounds of spare parts to the International Space Station each year. Shipping goods from Earth to space costs $10,000 a pound! What if the astronauts could simply 3-D print supplies on demand? NASA is exploring the possibility.
“With 3-D printing, you can update and change your designs in minutes and test the changes the same day,” says LaChappelle.
Another plus to 3-D printing is that it cuts down on waste. The printers use just enough material to make an object.
These printers can also create complex shapes that many machines can’t. This allows people—and animals—to get prosthetic limbs custom-made for their bodies. Doctors even hope to one day 3-D print human organs.