Learning About : 3D Drawing

The outsole of this Reebok was printed using a technology developed for the automotive industry.

As a first step, this technology can create an outsole pattern without a mold.  However, the problems found in traditional footwear manufacturing of adhering the upper to the midsole is still present. 

I could see this printing out a full upper if a last is used to help retain the shoe's shape.  If the machine could incorporate threads, the upper gets even more strength.  The next challenge would be creating a one piece upper/midsole to mechanically attach to the mesh outsole.