I know these anvils have a massive carbon content so there's a high risk for cracking, but it's only $15 and I'd get a lot more out of hardening it because these things dent like you're hitting pine. What color should I heat it up to? I know to hold it at that temp for 15 mins before the quench, but I'm not too knowledgeable about cast iron, I only really know about mild steel. Is it possible to just heat up the hitting surface and keep it at that temp for a few minutes before quenching, or does the entire thing need to be that temp?
