Flying ready-made quadcopters is fun. Eventually, though, most hackers get the urge to build their own. One of the most challenging parts is building a robust airframe. [Thomas Jarrett] has an ...

If your backpack's external frame died years ago or if you found a cheap ALICE pack on Craigslist without a frame, you can easily make one with around $3 worth of PVC piping and fittings. The only ...

Staff at a Home Depot built a walker for a disabled two-year-old out of PVC pipes so he could get around easier. Logan Moore suffers from hypotonia which leaves his muscles weak and makes walking very ...