what is 3d print very basic

3d print is a way to produce object see more. Whit a 3d printer you can print a cup you can have coffe in rather than buying it. This product is often made of plastic. These 3d model printer are expensive
you can also print out lego. or toys to your baby.
or maybe objects like this, that you can sell on ebay. 
Here is a final product
Here is a 3d printer machine printing a object