It seems we've mastered every part of the car-building process. When our engines wore out, we bought a book and rebuilt them. When the body shop gave us our first estimate, we learned how to paint. We ...

From the outside, a sewing machine is a wonderful bit of magic. A needle shoves thread up and down, and somehow a seam is formed. Here's a little YouTube video of this: What is that thread latching to ...

Like all Hackaday readers, we pride ourselves on having at least a passing acquaintance with how most things work. But we suspect to a lot of people, things we take for granted — computers, air ...