What Pisses off the Man Who is the Face of 3D Printing
Chris Koch
MAY 19, 2014
Indeed, when he began uploading the videos to the internet (this was pre-YouTube days), they got tens of thousands of views. “They retained the information better when they watched the videos than they did when I taught in person,” he recalls. Viral How-Tos. Not that Pettis was a bad teacher.
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