A 3D pen is a pen that extrudes heated or warm plastic from the pen's nozzle. You don't need any software. There are no files to transfer, and no difficult tech to master. In the words of a teacher we work with, “whatever you imagine, you can draw. Why you should buy a 3D pen? You may even be able to repair broken objects made from ABS plastic by using a 3D pen to “weld” the pieces back together with melted ABS. 3D pens can be useful to people of all ages and ability levels—even kids as young as 8 can use models specially designed to be safer to work with. Do 3D pens really work? Yes, 3D pens really work, if what you want to do is create a 3D model by hand. If you want to create a 3D model based on a pre-existing design, though, you need a 3D printer. A 3D pen uses the same type of heating element to melt filament that you get in a 3D printer. Also 3D pen costs around 29.99 or more depending by the type plus 20.00 for the printing filement. A good quality 3D pen can last up to 15 years and more