There are many materials that are being explored for Printing, however you will find that the two dominant plastics are ABS and PLA. Here is where the two plastics divide and will help to explain why different groups prefer one over the other.
This machine, called the Extrusionbot, makes it able to make your own filament for a printer. With this machine is it possible to make the filament from different kind of materials. It saves time and money for a producer.