Minecraft: Stylish 3x3 Spiral Piston Door Tutorial featuring a Downward Double Piston Extender

This Tutorial shows you how to build my stylish 3x3 spiral piston door which features a double piston extender coming from the ceiling. This was requested a long time ago and i always intended to do it but sadly hardly had the time to tinker with this piston door.
Though this 3x3 piston door is a pretty compact build it's main focus is on the spiraling sequences when opening and closing. Also haveing the double piston extender coming from the top allows us to use a light block in the ceiling or center of the door which adds a little more style to this piston door.

Worldfile download: https://www.mediafire.com/?oijyygkcgacg7ox

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------ used Music ------

"Silvermoon (2006) Cyra Elia / Bluejooz" by bluejooz
http://soundcloud.com/bluejooz/silvermoon-2006-cyra-elia
CC-BY http://creativecommons.org/licenses/by/3.0/