&gt;but they are not really any less disruptive.<p>Where&#x27;s the disruption exactly? Everytime I look at the 3D printing scene its a bunch of neckbeards printing Star Wars figures and other useless knick-nacks. What industry has cheap 3D printing attacked? The argument seemed to be &quot;Oh we&#x27;ll make spare parts and such,&quot; but that never happened. It was supposed to make a new market, but seems to have completely fizzled out.