Actually, he's into the whole "buckskinning" thing, so when I say custom, I meant handmade that just works. He like utilitarian pieces, not exactly pretty stuff.
I just have to figure out what piece of old medium carbon steel out of the scrap pile I will use.
I made the same guy a small froe (about 1/3 scale) from an old horseshoeing rasp. He was stoked when I gave it to him!! He wanted it for splinting wood out for basket making, hence the smaller scale.