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 interesting approach: he uses schedule 21 ...

He estimated at the time the body should weigh in at less than 30 lbs (14 kg), so he’d need to build a quadcopter with ... the real news is the prototype airframe. Made of aluminum and 3D ...