Day 493:
I’ve made wheels with the typical divot in the middle to ride on my rails, because there’s no point in repeating the past if you’re not going to learn from it. I make them in two pieces and then weld them together using my patented “pour hot metal on one pieces and very very carefully set the other on top of it” welding technique.
If there were more of me I’d say we’d invent welding torches in a few generations, but chances are that I’m either saved or dead before I get around to acetylene.
Anyway, it’s a far sight harder to get wheels to balance and roll evenly than anything our childhood toy sets let on, let me tell you.
(Not that my generation had a lot of toys with wheels to begin with. Mostly antigravity platforms and stuff like that. Flying transports. But my grandfather kept his grandfather’s toys in good repair, so unlike some of my classmates I at least knew what a wheel was when I saw one.)