World's Smallest Drum: GUINNESS WORLD RECORD!

Full story: stories.purdue...
Boilermakers everywhere know that Purdue University is home of the World’s Largest Drum. But have you heard about the world’s smallest drum? David Cappelleri, professor of mechanical engineering, came up with the idea to test out the Nanoscribe Photonic Professional GT2 3D printer, which he uses to fabricate microrobots. At 47 microns across (half the width of a human hair), this drum now holds a Guinness World Record for the "smallest 3D-printed sculpture of a percussion instrument."
David Cappelleri's lab: multiscalerobo...
Mechanical Engineering: purdue.edu/ME