1 Nephi 17:11

And it came to pass that I, Nephi, did make bellowses wherewith to blow the fire, of the skins of beasts; and after that I had made bellowses, that I might have wherewith to blow the fire, I did smite two stones together, that I might make fire,

I made bellows from animal skins to blow air on the fire. After I made the bellows, I hit two stones together to make fire.

I made bellows from animal skins to fan the fire. Once I had the bellows working, I struck two stones together to make fire.