Every wanted a mini wind tunnel to check the aerodynamics of scale model cars, drones, or other small objects? Then check out [dannyesp]’s mostly-3D-printed DIY wind tunnel (video, embedded below).

Discover how to build a homemade fog machine in this step-by-step guide using everyday materials like PVC pipe, a hair dryer, cotton pads, and a syringe. This engaging DIY fog machine tutorial ...