Alloy is made instantly.Wait...quick question: Is there a chance for an alloy to be made if my smeltery immediately pumps metals into tanks? If so, then so be it, but if not, then why am I bothering with 2 smelteries?
Casting takes time.
Melting down takes a little longer.
All items (seem) to take the same time to melt down.
So if you drain faster than you load, and don't throw an alloy mix in simultaneously...