u/UnhelpfulOpinion

Basically, the first quench is worth it, the second quench is risky, and depending on how much you value time and fuel, it may not be worth it. Anything beyond the second quench is not worth it, statistically speaking.

I wish it returned all the material on breakage, so the players who want to grind could waste fuel and time on trying over and over again to conserve metal. It's not like finding iron is that big of a problem, but there may be situations where players are limited in their access to iron veins, so they have a way to extend their iron use by spending fuel, "gambling".