[Tutorial/Explanation] Fastest Possible 4x4 Piston Door (0.15 seconds!)

Showcase video of this door: https://www.youtube.com/watch?v=xFTna4l2gpM Selulance's video on 0-tick pulses: https://www.youtube.com/watch?v=Rbbq9lnGuYQ World save (for versions below 1.8 you will have to put items in the 2 furnaces if you want to try the door!): https://www.mediafire.com/?qy93ac93thos4k3 4x4 aesthetics: http://imgur.com/a/i5mWa ------------------------------------------------------------------------------ Enjoyed this video? Rate it! Subscribe here: http://bit.ly/suBScribe Any Challenges? Whack'em in the comments! (I do read them, but I'm quite lazy as well.) Redstoner server ip: redstoner.com Awesome Non-Laggy Redstone Server!!! RedCloud is PRIVATE and WHITELISTED. We do NOT accept Applications, and do NOT share the IP. Current Players on RedCloud (Ingame Names): Cuniculator -- http://bit.ly/Cuniculator Dico200 -- http://bit.ly/DicoTheRedstoner DvirWi - http://bit.ly/DvirWi Fennoman - http://bit.ly/fennoman12 NiceMark - http://bit.ly/NiceMarkMC NikWillOrStuff - http://bit.ly/NikWillOrStuff Cassildz - http://bit.ly/MaizumaGames MinecraftChrizz - http://bit.ly/MinecraftChrizz Sidney600 - http://bit.ly/Sidney600MC Ultimate - http://bit.ly/UltimateRedstone HikkMC - http://bit.ly/TheHikkMCShowcase Useful Links: - The new videorecorder which I use: http://playclaw.com - better than Fraps! - RedCloud is hosted by CubedHost. Use code "RED" to get 15% off: http://cubedhost.com/redcloud ! - Another good server host to be found here: www.herobrineshosting.com - use code 'Dico' to get 10% off