Tired of mining stone? Wish you could get infinite cobblestone? Here! Generate Cobblestone with only lava and water!
First, get the following items:
Next, dig a 1x4 (w x l) hole in the ground.
Then, on the 2nd or 3rd block (depends on where you want the water), dig 1 block deeper. (This stops the water so it does not turn the lava into obsidian).
Finnaly, place water first on either the 1st block in the hole, or the last bock in the hole (1st block if hole in 2nd, 4th block of hole in 3rd), and then place lava at the opposite end of the water. This should create cobblestone at the remaining block that is not covered. Break it, and then it respawns infinitely!