Hi Greg,
I don’t know what your plans are regarding combination recipes that include carbon but currently the only way to do them is through the crucible which is a horrible pain in the ass to automate. I guess adding mixer recipes wouldn’t make much sense for carbon combination smelts but I would really appreciate if you could add a machine that is automation friendly for producing steel and silicon so you don’t have to make obnoxious systems like these:
Please consider adding a mixer recipe for redstone alloy as it only consists of redstone and silicon both of which have liquid recipes.