I would love the Idea of having molten glass in this. melting sand and calcite to get molten glass and be ably to use that in getting more glass or in casting optical cable if you for with Powerscooter with the casting plant.
In that case it might be an incompatability with metal and stars. I only got their molten glass that only makes their glass plates and not the normal glass.
Ah, yeah that is likely. I don't have interest in handling compatibility for metal and stars, but you or anyone is welcome to add a compatibility mod - likely by merging the glass items?
The problem was OC stone casting adding another casting glass removing yours. and then because that was the only thing molten glass could be used for it had no recipe on its own. It was not a metal and stars issue. that part actually worked quite well. ( mostly for other people looking for solutions to the same issue)