[#video: https://www.youtube.com/embed/xpJ8EoGmLuE If the internet was your online physics textbook, the Slow Mo Guys would be writing a good number of those homework ...

Take apart a few old DVD drives, stitch them together with cable ties, add a pen and paper, and you’ve got a simple CNC plotter. They’re quick and easy projects that are fun, but they do tend to be a ...