Sooo, I have this secret little base. Theme: Doomy evil cave of doom with some more doom. All out of stone, loads of lavapillars, and a big obsidian throne with... lava. So, this throne, is on the second half of a circular platform. The thing I try to make, is a deathtrap on the other half, specifically 3x2. It can't really be 2x2 because the pathways I have are all 5 or 3 wide, so having a trap covering only 2 blocks wide won't really do.
The platform is surrounded by lava, but I have plenty of space under this trap. The problem I have tho, it seems like it is not possible to make a 3x2 deathtrap, that opens up and pulls to the sides, so I can have a pit of lava. All the guides I have seen all are either 2x2, or involve redstone torches under the opening floor, where my lava will be. Any ideas how to do this? Anything that can create a "this-is-sparta" hole of at least 3 by 2 would do, with the limitation of no use of the walls, because there are no walls next to it.
If anyone knows if it is possible in some way, would be great didn't work too much with pistons, so might have forgotten something.