I printed a copy of emmett’s screwless heart gears for Valentines Day in pink ABS. Depending upon how far the gears are rotated, it can look like a flying chicken, a toothy fish, or a heart.

An example of why I really like the 3D printing community: People complained that it was hard to get the pins inserted into the plastic parts. So kcmelty designed a tool (3D printable of course) that made it easy to insert the pins.