Could you build this chair without a rail but only with the cart and the rest?
Yes, but then it can only be 1 large, otherwise the cart will slide away.
But to place a cart you need a rail.
Isn't it possible without it?
No, you can remove the rail afterwards, but that's a little fiddly.
But I don't have a rail and only enough iron to craft the cart or they didn't seem both together.
As I said, no lore without a rail.
But it still remains if you dismantle the rail then it would certainly be possible to simply place it in the gap where it belongs.
You can also use commands to spawn an invisible horse in the chair that has no AI (so that it does not move and does not make any sounds, but that is very difficult, so it is really better to use the rail.
Otherwise just go again the 6 iron farms should go quickly.
