Metalworking/Gunsmithing

[Shamus]

Would it be possible for the rarest of chances when making weapons to have one made be unbreakable? Or maybe something to do with rituals (or enchanting we haven't gotten there yet so don't know what is in store). I was thinking on at best with supreme stats in the field of choice being 1/100. Still a small chance, but a chance nonetheless. Of course that is with just making it. I imagine the ritual (or enchantment) would be either extremely costly or hard to find the items, if not both.