A "detailed" variant of a quarry stone generator.

Here is another picture, which Sync and corrections by n17t01 in action:
(Sorry the HUD is still in there!).

Instructions:

• From a not combustible material, two X built and filled: 
• On top of it comes a "frame" made of the same material around it:
• For the lava now a border is made and for the water, which should not let the cobblestone blocks burn afterwards, a hole in the ground:
• Water is filled into the outer gaps:
• In the upper gap comes lava (absolutely fill in the top, otherwise the lava becomes obsidian) and the thing works:
  (Here is also still the HUD in it...)
  • It is possible to make the generator usable from both sides. It is used on the opposite side the same Water drainage hole and the boundary built to it. The outer water columns, which prevent the water from flowing into the surrounding area, must also be extended; the lava boundary is sufficient.