Itomaki TANK

This is a 3D printed "Itomaki-TANK" (based on old toys of Japan).
"Itomaki" is a spool of sewing machine, "TANK" is a Tank.
It is driven by a rubber-band motor, and It is rotated slowly by candle-clutch.
My print data is [Nozzle=0.35][Z-pitch=0.35]
YouTube http://youtu.be/QoYsapEYc-4