This looks like it will have major effects on our economy
We hardly manufacture anything really. It won't hurt us like it will China and other Asian countries.
If anything, it might create a new niche market in CAD design for 3D printers. Think about all the cheap plastic crap you buy thats made in Taiwan. Somebody stateside can convert to CAD, and sell plans for home 3D printer use.
The possibilities for this are endless. We're talking Star Trek stuff. Speaking of which, imagine deep space exploration having access to this tech. Include CAD designs for every part on the ship. Something breaks, print a new one and fix it.