Casting metals like iron and steel causes there to be bubbles in the metal making it much easier to crack and shatter which is why actually forging blades is the baseline for anything more than decoration, although in metals/alloys that melt at lower temperatures like copper or bronze dont have...
I know the cheat thing makes ot so it doesn’t matter but the fact that bro is casting steel arrowheads and not hammering them out is quite annoying. Cast is for quick and easy like pots and pans or mass producing iron arrowheads with a large dip in quality. Especially for hunting cast arrowheads...