A 3D Printer is a type of machine that works from cad drawings to create things from plastic in 3D. It works from a spool of plastic that gets melted and added to the appropriate places, building it up until the part in question is completed.
Many things can be made from a 3D printer including but not limited to small parts, simple car parts, gun parts, and even whole guns can be made using a 3D printer. Anyone with a knowledge of CAD/CAM can produce parts that are the exact dimensions needed without much work to be done when the part is completed.
I have now had my Ultimaker for a year, so i thought i'd make a video to show what i have used it for. I have used it almost every day, i design and print a lot of stuff including toys, figures , helicopters and others too.