The Star Trek replicator stands as the ultimate dream of on-demand manufacturing. The bad news is that despite advances in 3D printing we are many breakthroughs (including nearly abundant energy) away from realizing that dream. The good news is that we are finally finding ourselves on the cusp of a paradigm shift in manufacturing away from mass production to fast, low cost, small series (including single part) capabilities. The shift is being led by a new crop of startups, including Plethora ...