A while back, we wrote about the ducted fan, single rotor, VTOL drone that [Armin Strobel] was working on. It wasn’t quite finished then, and hadn’t got off the ground yet. He’s posted an ...

We’ve featured quite a few fume extractors over the years, like this ducted fan, or this downdraught workstation. It’s safe to say though that many of them have been a lot more cumbersome than ...