Step 4: Cut Those Stones (With Tools We Definitely Have)

Here’s where things get fun. You’ll need to cut these stones with such precision that future engineers will wonder if you had access to advanced technology. (Nope, just good old-fashioned elbow grease… and maybe a little bit of, uh, technique that we’ll just keep between us.) Just make sure each block is so perfectly square that you could set your sundial by it. No one needs to know how you did it, as long as it looks like magic.