After a lot of attempts at building a steam engine I have perfected it, it's not that compact, but it works perfectly it has 147,000 SU, and it's an LVL 9 boiler I have still yet to make an LVL 18 boiler this steam engine needs create: crafts and additions because you need to give the blaze burners straws to feed lava from the dripstone cauldrons to the blaze burners in vanilla create you need to feed blaze burners blaze cakes or lava or anything you can feed a furnace by mechanical arms it was pretty simple to build