Our son designed today's print in Tinkercad. It is a test design for a 3D-printed boat for use in flooding emergencies. This was his third design, optimized for rough waters and ability to float after being dropped from a rooftop into water. He used Marissa's "Capsule" Tinkercad shape script.
STL file: http://www.geekhaus.com/makerhome/day39_CGRboat.stl
Tinkercad link: https://tinkercad.com/things/4BOEtvur6PW-day-39-cgr-boat
Thingiverse link: http://www.thingiverse.com/thing:160911
Settings: Afinia .3mm default fast in 12 minutes.