Simply cannot smelt with heated (copper) Large Metalbars (other metals untested)
It does not matter what is selected for the large metal bar, sword/hammer/pick-axe/handle, you will be able to hit the bar to a point, and then nothing happens, other than fatigue increasing
Ram: 64gb
Graphics: 4070 Super Ti
OS: Win11
Processor: AMD Ryzen 7 7800x3d
Desktop