@Thunderbolt7 I'm a little confused as to where you are exactly, but if you have the sword and the wire pencil you're on the right track. I think you're referring to the room that has a drillcart and tracks on the ground? If so, use your wire pencil to connect TNT to the boxes with the handles (plungers). You can blow up the rocks and find a battery. Connect the battery to the machine on the tracks, switch them and then activate the minecart so it follows the new path on the tracks and runs into that wall!