The Torah says to cast gold rings when building the Mishkan. Obviously you'd have to do the melachos of extinguishing to make charcoal, burning to then ignite said charcoal, and cooking to liquefy the gold.
At that point, the remaining steps are to pour the molten gold into a mold and then remove it from the mold.
Does casting in and of itself constitute a Biblical melacha? Is it makeh b'patish (a term literally invoking forging, more than casting)? Or something else?
