User blog comment:Terrari492/Obsidian Generator/@comment-4674838-20120524063428

Very nice! I recommend altering the spigot so that the water flows on top of the lava where they meet, rather than lava flowing on top of water. Water flows faster, so the liquids even out better that way, causing less delay in the obsidian forming. It also preserves your lava level slightly better, which is good since lava both duplicates and flows very slowly. And if your reservoires are large enough and you fill them up, it should create infinite liquids. Fill once, mine forever =)