This man not only makes cool clocks but also tells people how to make them. YouTuber Hans Andersson is the creator of several interesting clocks that show his ingenuity in designing innovative ways to display time. One of his works, Time Slider, is a unique digital clock that uses sliding grids to show or hide the segments of the digits. The sliders move in sync to show the current time every minute. These clocks are not plug-and-play devices, as they require some assembly, but the instructions