You can just buy SnPb solder today, probably with better fluxes than whatever they were using in the 80s. Non-Pb solders also work fine for almost everything (I

You can just buy SnPb solder today, probably with better fluxes than whatever they were using in the 80s. Non-Pb solders also work fine for almost everything (I keep a little bit of SnPb around but do most of my work in lead-free), the big thing is to have a good iron and good tips. Makes way more difference than the solder composition.