The green residue is typically formed from the reaction due to heat between copper & the plasticisers,flame retardents,etc found in the insulation of mainly older styles of PVC insulation,not the oxidisation due to lack of solder.You will see it mostly in under rated cables used in elec installations using the first generation of PVC cables.Tell me how much green goo youve ever seen dripping out of the ground strap between the rocker & the radiator support?How corrossive is it? I'm not sure,but i've had it all over my hands for hours before,& its been described to me as non toxic on many occassions.Quote:
Originally Posted by roar
As for the strength,when copper is heated to solder it becomes brittle near the edge of the solder joint & more likely to snap due to constant vibration or mech movement,i've fixed alot of these examples in my time.