Jeremy Mayer created a whole bunch of human faces with a bunch of recycled typewriter scraps, using a technique called "cold assembly".

That means, he doesn't use any welding, soldering or glue to join pieces together. In fact, there's nothing holding the pieces of art together, except more pieces of art.

It can take Mayer as many as 40 different typewriters and a whole year to reassemble parts into a single sculpture. Of the roughly 120 sculptures Mayer's created, all but one have been sold: "I have a hard time doing a show because I sell everything before I amass enough work to put one on."

Humans Invent, via Vimeo