A number of converging forces are bringing industrial-scale design and manufacturing tools to a tipping point where they will become cheap, reliable, easy, and versatile enough for personal use. The rapid adoption of personal manufacturing technologies is accelerated by low cost machinery, active online user communities, easier-to-use computer aided design (CAD) software, a growing number of online electronic design blueprints, and more easily available raw materials. Personal manufacturing technologies will profoundly impact how we design, make, transport, and consume physical products. .