[Leg? Tony can't help but glance over at him, eyes trailing down. And oh hey, look at that. Explains some of the saddle modifications.]

Well, metal is definitely a thing I can do. If they don't have it here, I can probably source it.

[If he's talking forges, then it's probably iron or copper. Tony idly wonders what'll happen if he introduces the kid to steel.]

Anyway, the first step to good engineering is ideas, and you seem to be doing fine there.