Technically, humans are also 3d printers....we just are super slow at assembly of large structures.... However we are able to design and build and "print" more

Technically, humans are also 3d printers....we just are super slow at assembly of large structures.... However we are able to design and build and "print" more complicated structures as we work in 3 dimensions and are only limited by our strength. Side note: 3d printing is awesome tech. While its not exactly super eco friendly, its a big help for rapid prototyping. I currently have an ender 3 pro which I upgraded with a touch sensor. Its not working due to issues I can't figure out....but I think it has a motor or alignment issue....but the 2 prints I have successfully done were amazing.