ZipKrowd Server Episode 2 - Gravity block duplicator

Distracted from work on the storage room by a new video from Test137E29 I dropped what I was doing and attempted to make a sand generator on the server entirely from memory. I didn't quite manage it but got there in the end.

Test137E29 gravity block duplicator video : http://youtu.be/7m2G1QeV-nQ

Texture pack by Misa : http://www.minecraftforum.net/topic/69354-64x151-misas-realistic-texture-pack-updated-13mar2013/