A simple piece of redstone machinery that I made basically because I wanted a challenge. I'm a bit of a minecraft noob and this is my first published work, so be kind in comments and any improvements to this would be much welcomed.

Additional Notes

May be a few bugs in it and a few irrelevant sections.
--- I've left the machine on maximum capacity, so you can see it in it's glory, so just destroy the blocks to get it to work :) ---
There is one mislabeled sign, the one that says "the bit is useless" or along those lines, i removed the useless bit so it is now next to a useful bit, I've removed it and will updated it when i next make a big change to the design of the project.

To use the world unzip the file download and stick it in your world saves folder

The url says 12 x 12, i thinks it's 12 x 11 but I'm not sure ;D, i changed the title but the url stayed the same :(