Make Angel's smelting recipes the best way by disabling direct ore smelting in furnaces. It forces you to go in the advanced metallurgy path. Need angel's smelting.
Tweaks
Mod category: Tweaks
Small changes concerning balance, gameplay, or graphics.
All options I can find to get solder requires basic electronic boards for at least 1 machine in order to get the oxygen for smelting lead.
-all types of electrolysis require mk1 electrolysers
-air separation requires an air filter
I don't think this is a mod interaction issue but I can't be certain - I'll post my mod list if this is the case.