Confessions of an accidental job destroyer

I expected my summer engineering internship to include things like updating old 3-D models, creating part designs, and learning the ins and outs of how a company works. I didn't expect it to involve learning to make my colleagues obsolete. It was the summer after my sophomore year of college, at a company in Southern California. At the beginning of the internship, my manager asked me to implement 3-D printing to streamline a complicated mold-making process. I have long been obsessed with 3-D printing (I own two machines myself), so I was thrilled to introduce it into the business.