I have seen the future, and it's this 3D-printed air raid siren honking its baleful tones over my neighbourhood as the waters rise
Impressive. A potentiometer attached to the speed controller means the pitch can be adjusted by ramping the speed of the motor up and down, meaning those wooooos can become weeeees, and so forth. And ...
New 3D printing technique replicates nature's delicate fibers with precision
Researchers have been trying to find new ways to produce and replicate the various useful features observed in nature. Fine ...