A fully automatic cocktail mixer from France, a computer controlled calligraphy machine from Japan, a CNC machine from Peru. It's week 17 at the Fab Academy and students from around the world are showing the machines they have built in the online classroom. Each team has been allocated two minutes to present their project on the live stream. This is followed by some tips, compliments and occasionally some criticism (“it clearly needs more work”) from Professor Neil Gershenfeld, the director of Fab Academy.