This week’s 3D printing headlines illustrate that the revolutionary technology can be both a blessing and a curse. The world’s first fully 3D-printed gun “The Liberator” was successfully test-fired, setting off alarm bells with congressman like Steve Israel who vowed to ban such firearms. Just days later Makerbot posted a video of 3D printed hands being built for kids with missing appendages. It’s Wild Wild West days for the technology, but with endless possibilities looming there’s also likely likely to be new legislation, copyright issues, and serious public debate. Hold on to your hats.