Time lapse of a 150 minute 3D print into about 150 seconds. Can you guess what I'm printing before it's complete?

I'm primarily posting this for friends that want to see what i do with my 3D printer. If you want to see more, "Like" the video or add a comment, and I can periodically do more of these.

Music:
"Rainbow Ride" by Azureflex (Creative Commons)
http://freemusicarchive.org/music/Azu...

3D object used to print:
by rgproducts on Thingiverse (Creative Commons)
http://www.thingiverse.com/thing:640041