Now，smaller consumer friendly 3D printers are bringing additive manufacturing to home and businesses.
The first step in 3D printing is create a blueprint of the object you want to print.
You can use modeling software like Blender to create your own designs or you can visit websites like Thingiverse or Shapeways to find objects other users have 3D modeled.Once you have a finished design it's time to send it to the printer.
您可以使用Blender等建模软件创建自己的设计，也可以访问Thingiverse or Shapeways等网站查找其他用户进行3D建模的对象。完成设计后，就可以将其发送到打印机了。
Some printers，like the Makerbot Replicator 2，have removable bioplastic spools in the back of the device almost like a string.
3D pringting food is becoming very popular and additive manufacturing has allowed for the creation of some pretty intricate treats.
In the medical world，doctors are testing bio-materials for regenerative medicine.By using a patient's cells，doctor could 3D print small body parts like ears and noses. Some surgeons have even tested 3D printed organs for transplants.