So, I know it's retardedly basic... but if you have Ex Nihilo (sky-factory or Agrarian Skies - AS 2 for preference - or any of those systems), you could just use an Igneous Extruder, an array of the Ex Nihilo crucibles (NOT the Thaumcraft crucibles, the ones made from Porcelain Clay), and some form of piping. My last server had one Resonant level Extruder, the Pyroclastic Generation augment line, and the Space-Time Flux Unifier augment line (frankly, I have no idea if that one actually did anything, we never bothered monitoring it) attached to like 36 crucibles, connected to two x64 lava generators, and we had more than enough cobble left over to feed a series of Gravel, Sand, and Dust sifters (two each), and even a Clear Glass smeltery. MIND YOU, we were using Blazing Pyrotheum under the crucibles, since we didn't know of anything better to use. The generators also fed into a (resonant) battery for "general purpose" machinery, but that wasn't a huge deal because we didn't run that thing constantly.