OKAY!
Next thing:
Something that wasn't in the original glasses and glazes, but which I learned a bit about while up collecting slag and agates around Lake Superior. SLAG! I want to add slag to the smelting process.
For simplicity, I want, any time an ore is smelted, it to produce 1 unit of slag as well, a value:1 [IS_GLASS] material that can be used as a glass gem or maybe a stone (might change it to stone), or crushed and used as sand for glass making. That used to be a thing, long long ago. That's right, I'm adding a legitimate historical source of sand for glassmaking. But don't be thinking you'll be mass-producing it; you smelt ores to get it.
This is easy for the combined reactions (the smelter reactions like for making bronze right from ores): just add the production of one per ore. However, for base ores - like if one wants to smelt malachite to copper - this seems a little more difficult. There, it uses simply the METAL_ORE token. Unfortunately, that seems to imply producing bars of the noted inorganic (I assume if one typed [METAL_ORE:QUARTZ:100] one would get 4 bars of INORGANIC:QUARTZ or something). I, however, want to add the production of either a stone of slag or a rough slag. One way I could do that is remove the METAL_ORE token from each ore, and make a corresponding reaction for each. That would, unfortunately, de-randomize the less-likely metals (e.g. silver from tetrahedrite), but oh well. However, I wanted to ask, first, if there's an easier way something I can add to the ores to get them to produce 1 unit of rough or stone slag, or so, when smelted?