^ This. That's why the Magma Crucible exists, but I couldn't make it *too* easy, as you can actually Quarry Netherrack ridiculously faster than you can pump lava. It's a tricky balance point.
On another note, Vovk - I like the post, but your Avatar creeps me the hell out.
heh. I thank ye twice for both statements. This picture gave me nightmares as a kid and I wanted to share the awesomeness of Stephen Gammell's art with the rest o' ya
also @ kirin dave - you can set up around 2-3 crucibles throttled to 16 or 24 MJ per tick so that each gets 8 MJ/tick. Then have tubes hooked up to a single extradimensional barrel full of netherrack (you'll actually mine more than enough to fill one)
running those 3 crucibles should provide you enough lava for anything and allow you to store a bunch of lava in a relatively small space. you could use then a small 16-64 storage buffer for on demand access.
Edit: with very careful turtle programming you could pump lava from the nether in a lag free way.
it would carry a stack of cobble and a stack of empty cells. It would go into the bottom of the lake and use the cells on all the blocks around it. Then it would surround itself with cobble on all sides but one, then it would move once, fill in the cobble behind it, mine lava in front of itself, move into the flowing lava space it just opened, fill in the space behind it with cobble, then move over once more rinse and repeat. When full, it digs through the cobble, replacing it as it goes until it gets back to the dropoff location where it puts the lava cells (which are put into transposers and tesseracted into your base) then it will go to a chest where it will restock on lava and fuel and cells, then repeat. You could save on a lot of lines of code by just skimming the top of the lake, adding cobblestone to fill in flowing lava blocks, but meh... you lose 80% of the lava that way.
Think I'd rather just quarry netherrack.