It seems like IGN has removed the video, so I'll provide screenshots of one I built in Single Player as I do not have materials to build on Hellblock. Okay, so I've always used redstone repeaters when I've made an advanced generator and 6 pistons. It can vary, I've seen those who use 1 piston, those who use 2 and so on but I've always loved 6 pistons as they produce fast enough for me. The things you need is: Piston (not sticky, how many is your choice) Building blocks (I've used netherbricks, just in case of a ghast) Lava buckets (Just make an infinite lava source for more lava) Redstone (To wire power to the pistons) Redstone repeaters (If you can make a redstone clock without these, then you can do it your way, this is just my way) Redstone torch (To give the redstone dust the power to make a clock) If you don't know how to make a piston, check the screenshot in the spoiler. Spoiler Then you want to build a normal generator with lava on the sides but this time pistons like in the screenshot in the spoiler below. Spoiler To get the pistons to push forward you need a redstone wiring, I have a clock so I don't have to go to pull a lever the whole time, check the screenshot below. Spoiler Then you set the click on the repeaters so that it is slower then usual because the lava pits need to create a netherrack between them, otherwise the piston will just pump air and you'll mine the netherrack that keeps the lava from you. I usually have it on the last click or some on the second last. Just try and see what fits you. And I want to point out one thing, if you want it to stop at 6 blocks, then use signs to block (because they are cheap to make). If you don't want to use signs to block, the pistons will push 12 blocks and stop there. Check MC Wiki for other blocks that could stop pistons if you don't want signs. Of course there are even more advanced generators but I haven't learned myself how to build those as this has been good enough for me. Hope I helped.
