Quote Originally Posted by Ishmael View Post
TinCow, did you still have a ton of cobblestone lying around? Would you mind if I borrowed some?
Yep. I've probably got about 13-14 double chests of the stuff, and could spare 10 of those. Help yourself.

Quote Originally Posted by spankythehippo View Post
When you said you built a mob grinder before, did you use this design?
No, I built this one:



I chose that one because of the automated on/off switch with the lighting and because it was much more compact. Compact was important to me because I was building it entirely underground. The system definitely worked, but it produced very small numbers of mobs. I do not believe that was caused by the design, but was instead because of where I located it. There were simply too many other places for mobs to spawn other than inside my farm, so it didn't work well. If that same one was built in a much better location, I bet it would produce decent results. The version I built was 3 tiers high.