Consumer 3D printers print shitty plastics. If you ever want a strong plastic, or god forbid a metal piece, or GASP silicon, you're out of luck.

No you can't print a 3D printer. And never will be able to. All they can print is 100% shitty plastic. 50s tech basically. As soon as you encounter metal or worse you need a silicon chip, that's it. You go outside.