Use left and right arrow keys to seek audio. A 3D printer that outputs chocolate creations? Sounds decadent and delicious. And the complete opposite of using plastics and resin to create 3D prints.

Though Valentine’s Day is not America’s most candy-centric holiday (that’s Halloween), it’s a close runner up. Boxed chocolates have been a popular gift on February 14th since the late 19th century, ...