Got 402! This was a really fun game and I got into the flow state while playing it (similar to overcooked). The graphics style worked well and I enjoyed the polish you put into it (the eyes moving with the direction of movement, the music becoming more intense as the time crept lower). I loved how over time I was able to place the molds/assemblies/tongs where they would be most efficient for a single player (which made it a lot easier when I figured out a good system).
One thing to think about is it's almost impossible to tell what type of ingots you need for a recipe without relying on color (which can be especially difficult since the color changes after quenching). I don't have a really good answer for this, but it's something to keep in mind. Also the tutorial screen layout was kind of intense. Maybe you can have the flow be more together (without considering the spaces in the forge) and add some text for each step?