So if I carefully carve a long trench in a length of solid granite (since I certainly have enough of it) and then fill it with iron ore, I might be able to make a rail. And then if I douse it with cold water, that should be enough to shrink it to pull it out of the granite.
And then I just have to do it a couple dozen times over the course of a few weeks to actually make enough rails to move anything.
And then I need to do the same thing for curved pieces, or develop something strong enough to curve straight pieces, all while not snapping them, with the knowledge that my iron is still weak enough that I go through 20 iron pickaxes in the amount of time it would’ve taken me to wear out the battery in one laser cutter if The Company was here running this mission.
I’m thinking going back to digging is my best bet. This bucket of lava can just sit here for now. It’s got to cool down eventually, right?