By building simple machines, kids can learn the concepts of physics and mechanics in an exciting and tangible way. Before ...

[Scott Swaaley] needed a bunch of timing pulleys for the clock he was building. He had already decided on the MXL profile, but he needed so many of these toothed pulleys in so many configurations ...

To get the look, she attached a pulley to the wall before adding an ... get Home & Garden news to your inbox and share your ...