Any machines added to the "Other machines that can do founding" list in the Foundry mods' settings are unable to make solder and AAI's glass (the pyroflux recipe with Space Exploration appears but not the standard AAI recipe. The Krastorio 2 glass recipe appears just fine with K2 enabled so this appears to be a bug rather than a balance decision).
This issue appears to be from the Tin mod, as the glass recipe shows up just fine with Aluminum enabled but not the Tin mod enabled. Solder is of course directly from this mod.